100 Years Later: A Map of Major 1920 Events

Another decade has come and gone. So that history doesn’t repeat itself, let’s remember the 164 major events that happened exactly a century ago in 1920. It was a year of major healthcare milestones like the creation of hydrocodone. 1920 also saw several U.S. political events (women’s suffrage) that changed the history of the country forever. While 1920 was full of health and political advancements, deadly disasters also wreaked havoc throughout the year. These natural and man-made disasters included the Haiyuan earthquake, which caused a landslide that killed 180,000 people in China as well as 39 wars, revolutions, and uprisings, like Ireland’s Bloody Sunday.

View 1920 Events in a full screen map

Use the map above to browse 1920’s events as sorted into categories such as Wars, Revolutions, and Uprisings (find the data here). Then, learn more about each category of events, like how the very first event to kick off 1920 was related to war.

Wars, Revolutions, and Uprisings

In 1920 there were wars, revolutions, and uprisings aplenty. These included the Polish-Soviet and the Polish-Lithuanian Wars along with the Irish War of Independence and many others as displayed on the map.

The Polish-Soviet War and the Polish-Lithuanian War

The Polish and the Soviets had been fighting a war since February 1919 — of which the Russian Revolution was a cause; read more about it here — but 1920 was the year the war ended. However, several important events occurred prior to the war’s conclusion, including the very first event to kick off 1920: when the Russian Red Army increased its troops along the Polish border from four divisions to 20 in January. After this, the next major event of the Polish-Soviet War occurred on April 24th when Polish and anti-Soviet Ukrainian troops attacked Russia’s Red Army in Soviet Ukraine. Throughout the summer months of 1920, Polish and Russian troops went back and forth in Kiev. On May 7th, Polish troops occupied Kiev, but later in the summer, the Russian Red Army took it back. On July 22nd, Poland sued for peace, but Russia rebuked them. Then came the Battle of Warsaw: on August 13th, Poland defeated the Russian Red Army. Russia sued for peace with Poland later in the fall, but the war didn’t end until October 16th when the Polish army captured Tarnopol, Dubno, Minsk, and Dryssa.

Yet, Soviet Russia wasn’t the only country Poland was at war with during 1920. Poland was also engaged in a war with Lithuania. However, just one major event took place in 1920, when, on October 9th, Polish troops took Vilnius. This was just days before they took the four cities from Soviet Russia. Clearly, Europe was quite busy in 1920. In fact, more major events occurred throughout the continent than anywhere else that year. Most of Europe’s 1920 events were wars, revolutions, and uprisings, to which Ireland contributed as they fought the Irish War of Independence.

Irish War of Independence

The Irish War of Independence lasted from 1919 to 1921, and 1920 was full of monumental events. In late March, British recruits to the Royal Irish Constabulary arrived in Ireland. The Belfast riots on August 3rd were a response to British presence. Ten days after the riots, the U.K.’s Parliament passed the Restoration of Order in Ireland Act, which would try members and supporters of the Irish Republican Army by court-martial instead of by jury in criminal court.

Things cooled off until November 21st, deemed “Bloody Sunday,” when the Irish Republican Army shot and killed 14 British undercover agents in their homes in Dublin. Later the same day, the Royal Irish Constabulary opened fire on a crowd at a football match, killing 13 spectators and one player, and also wounding 60. Later that same night, three men were shot in Dublin Castle.

Two more events of the Irish War of Independence happened post-Bloody Sunday: the Kilmichael Ambush and declaration of martial law. But Europe wasn’t the only continent in the midst of conflict throughout the year. Other notable wars, revolutions, and uprisings of 1920 include the Mexican Revolution, Russian Civil War, Estonian War of Independence, 1920 Palestine riots, Greek Summer Offensive, Battle of Maysalun, Second Silesian Uprising, Bukhara operation, and the Carinthian Plebiscite.


Did you know that the NFL was established in 1920? Yes indeed, on September 17th, 1920, America’s favorite Sunday pastime was created. For more fun football facts, see maps on where college football players come from, NCAA football champions mapped, and American football hall of famers not all born in Texas. For more major sports-related events of 1920, including pro-wrestling, the Olympics, baseball, and horse and dog racing, keep reading.

1920 saw a lot of firsts in sports: the oldest existing movie of pro-wrestling was filmed (Joe Stetcher vs. Earl Caddock), the first dog racing track to employ an imitation rabbit opened, the first Prix de l’Arc de Triomphe horse race occurred in Paris, and the Olympic symbol (five interlocking rings) and flag were displayed for the very first time at the Summer Olympics in Belgium. The first game of the Negro National baseball League was also played in Indiana.

Health and Disasters

Health-wise, noteworthy events of 1920 include a woman who attempted suicide in Berlin and later claimed she was Anastasia, the Grand Duchess of Russia. This was not the first nor the last time someone impersonated the Grand Duchess, and it later inspired the 1997 children’s movie, Anastasia. Plus, France outlawed birth control in 1920 and pain-relieving opioid hydrocodone was synthesized in Germany for the first time that same year. The HIV pandemic also likely originated in Léopoldville (modern-day Kinshasa), the capital of the Belgian Congo at this time.

As for disasters, 1920 was hit with two major earthquakes: the Gori and the Haiyuan. The Gori earthquake hit Gori (Democratic Republic of Georgia), killing 114 and the Haiyuan earthquake caused a landslide in Gansu Province, China, killing 180,000. Other natural disasters included the Louth, Lincolnshire, England floods which killed 23 people.

Then there were the U.S.-specific disasters: the 1920 Palm Sunday tornado outbreak, which hit the U.S.’s Great Lakes and Deep South and the Wall Street bombing. The Wall Street bombing saw a bomb placed in a horse wagon that exploded in front of the J. P. Morgan building in New York City. The bomb killed 38 and injured 400. There were many other major 1920 events in the U.S., most related to culture and politics.

American Culture and Politics

In America, 1920 was the year that two Amendments to the Constitution passed: the Eighteenth Amendment (Prohibition) and the Nineteenth Amendment (women’s suffrage). Additionally, the 1920 presidential election where Warren G. Harding (R) defeated James M. Cox (D) was the first national election where women could vote.

Other than when the U.S. Post Office ruled children may not be sent via parcel post (because apparently, 1920’s Americans were doing that), the rest of the notable cultural and political events involved radios. In August, Detroit began the first commercial radio station and in September, the first domestic radio sets became available in stores for $10 (about $180 adjusted for inflation).

The 1920’s map above also contains information about international politics, post-World War I events, world cultural events, and even the Nobel Prize winners of the year, which is history you can delve deeper into with our Nobel Prize map. And since we tend to think of history as black and white, the ability to customize our map to fit the story was essential. Plot some history of your own with a custom map today.

2020 Presidential Primary Dates & Locations on a Map

Ahead of any presidential election, there are events Democratic and Republican voters alike need to know. These include conventions, caucuses, debates, and other categories of events that occur leading up to a presidential election. If you don’t have time to track each of the 90+ presidential primary events for 2020, you can get by as long as you keep an eye out for key dates like Super Tuesday and the additional presidential primary events that play a huge role in the election of the next U.S. president in 2020.

View 2020 Primary Dates & Locations in a full screen map

The map above has all the 2020 presidential primary events you need to know, which we got from the New York Times’ 2020 Presidential Election Calendar. Sort the map by presidential primary event categories or the year and month of the event to narrow down the dates you need to know most.

Conventions, Caucuses, and Other Categories

We are tracking 91 presidential primary events for the 2020 election. That’s a lot to remember! Luckily, we can break down the events into five categories: conventions, debates, the election, and primaries and caucuses. Let’s learn what events from each category entail.


On the map above are two nominating conventions, which you may recognize from the presidential nominating convention locations since 1832. These conventions are where the two major political parties will officially select their candidate for President of the United States. The Democratic National Convention takes place July 13-16, 2020, in Milwaukie, Wisconsin, while the Republican National Convention starts August 24th, 2020 and runs through the 27th in Charlotte, North Carolina.


Twelve primary debates are scheduled throughout the 2020 presidential election cycle, all of which are for the Dems to debate amongst themselves. Six of these Democratic primary debates take place in 2019 while six more are scheduled for 2020 as Democrats narrow down their presidential candidate.

Republicans are skipping their own primary debates this election as primary debates are for candidates of the same political party. Seeing as incumbent Presidents have a better chance at winning the presidential election than any new candidate of the same political party, Republicans are pretty much guaranteed to stick with Donald Trump and they don’t need to hear from any other GOP candidates to make that decision.

There are also three presidential debates for when each party nominates their #1 candidate at the nominating conventions, along with one vice presidential debate.

The Election

The election is a category with just one event: the 2020 presidential election. This cycle, the election will take place on Tuesday, November 3rd, which is quite early. Election day is always on the Tuesday after the first Monday of November, with the earliest possible date being November 2nd and the latest possible date being November 8th.

Primaries & Caucuses

While these two categories accomplish the same goal of selecting a primary candidate, primaries and caucuses use different methods to do so. A primary is similar to a general election in that it is a statewide voting process where voters cast ballots for the primary candidate of their choice. A caucus, on the other hand, is comprised of local gatherings where voters decide which primary candidate to support and select delegates for the nominating conventions.

The 2020 presidential primary season has seen the cancelation of several of the primaries and caucuses that usually take place: the Kansas Republican caucuses, Nevada Republican caucuses, the Arizona Republican primary, and the South Carolina Republican primary. All of the canceled events were meant to be for Republicans to select their candidate. However, just like the absence of GOP primary debates, Republicans in these states already know they’ll be supporting their incumbent. It turns out canceling primaries and caucuses is quite a common practice. Throughout the 2012 election when Barack Obama was the incumbent, several of these same states canceled their Democratic primaries and caucuses in support of the incumbent at the time.

Keep an Eye out for Key Dates Like Super Tuesday

Even with the 91 presidential primary events broken down into categories, the events are still not the easiest to track. Short from making our map your browser’s homepage, just keep an eye out for the one month or even just the one key day during which most of the presidential primary events take place.

There are 39 primary events scheduled for March 2020, which is nearly 48% of all primary events for this election. These March events include the primaries of key states like Michigan and Ohio which will provide insight into the preferences of suburbanites, African-Americans, and the white working-class. Then there is the Super Tuesday in March, which accounts for nearly 40% of delegate allocation. Political analysts expect the presidential primary race to be decided on Super Tuesday (March 3rd, 2020), when all of the following primary events all take place:

Super Tuesday map
  • American Samoa Democratic caucus
  • Alaska Republican conventions
  • Texas primaries
  • Alabama primaries
  • Arkansas primaries
  • Colorado primaries
  • Maine primaries
  • Massachusetts primaries
  • Minnesota primaries
  • North Carolina primaries
  • Oklahoma primaries
  • Tennessee primaries
  • Utah primaries
  • Vermont primaries
  • Virginia primaries
  • Democrats Abroad primary
  • California primaries

Most notable on Super Tuesday are the California and Texas primaries. As California has the most delegates in the U.S., it is one to keep an eye out for on Super Tuesday. Texas has the second-largest amount of delegates, so it too is one to watch on this monumental March day.

More Presidential Primary Events That Play a Huge Role

In addition to Super Tuesday, what other 2020 presidential primary events play a huge role in determining the presidential candidates? The Iowa caucus is where the first primary votes will be cast. These first votes can impact who the choices of voters later on, so pay attention to the results of the Iowa caucus on Monday, February 3rd. The next event to watch, the New Hampshire primary, takes place on Tuesday, February 11th.

Following the New Hampshire primary on the 11th is Nevada’s Democratic caucus on Saturday, February 22nd. This caucus is known for being well-attended and it is also the first state caucus with a large Latinx population. The results of Nevada is a good indication of how other voters are leaning. Then, on Saturday, February 29th, the spotlight is on South Carolina. Their Democratic primary is a good predictor of who black voters will select.

The last presidential primary event that will play a huge role is the New York primary, which is scheduled for Tuesday, April 28th. If any Democratic primary candidate is ahead at this point, the leaders of the Democratic party will likely call the primary race on this day.

There you have it, voters: all the 2020 presidential primary events you need to know laid out on a sortable map, along with the most important dates to watch. Which primary candidates do you think will win in 2020? And which of the primary candidates — if elected, of course — do you think could out-travel George W. Bush, who made 140 international trips abroad during his time in the Oval Office? You can read more about the international travels of U.S. presidents here.

List of Super Bowl Locations Mapped

In a few years, the 55th American football championship, also known as the Super Bowl, will be played. While some Super Bowl fans are fervently identifying their ideal fantasy league for 2024, we’re more curious about the locations of Super Bowls past, present, and future.

We’ll take a look at some popular Super Bowl locations (some stadiums have hosted the Super Bowl over five times!), along with the highest-attended Super Bowls in history. Plus, we’ll note the locations of future Super Bowls and the three states that make up over 70% of Super Bowl locations.

View Super Bowl Locations in a full screen map

The map is based on this list of Super Bowl champions and their locations. You can sort the map by the most popular venues or by Super Bowl attendance and then keep on reading for more Super Bowl location trends. Let’s kick-off!

Popular Super Bowl Locations

Several stadiums have hosted the Super Bowl on more than one occasion. For example, New Orleans’ Superdome has welcomed NFL fans six times. The first Super Bowl located at the Superdome was the 1978 Super Bowl XII. Most recently, though, the 2002 Super Bowl XXXVI was held there.

The Rose Bowl, located in Pasadena, California, has also hosted the Super Bowl multiple times, the first taking place in 1977. In total, the Rose Bowl has hosted the Super Bowl five times, most recently in 1993. Perhaps we’ll see the sixth soon. Like the Rose Bowl, the Miami Orange Bowl has also hosted the Super Bowl five times, all of which occurred between 1968-1979. The following venues have also hosted the Super Bowl at least twice:

  • Tulane Stadium (New Orleans)
  • Raymond James Stadium (Tampa)
  • University of Phoenix Stadium (Glendale)
  • Tampa Stadium (Tampa)
  • Qualcomm Stadium (San Diego)
  • Mercedes-Benz Superdome (New Orleans)
  • Los Angeles Memorial Coliseum (L.A.)
  • Joe Robbie Stadium (Miami Gardens)
  • Georgia Dome (Atlanta)

Cities selected to host Super Bowls need to have moderate weather in February — or at least stadiums covered by a dome so that the players (and fans) don’t freeze. But we’re sure more than 10 states fit the bill. Yes, only 34 different stadiums across 10 U.S. states have hosted the Super Bowl.

The majority of the Super Bowls (41 out of 58, or over 70%) were located in either Florida, California, or Louisiana. The entire extended midwest and much of the northern U.S. has been passed over for a chance at hosting. This may coincide with strict weather stipulations, but it may not. Check out our map of extreme temperatures if you’re curious.

History’s Highest-Attended Super Bowl Locations

Perhaps just 34 stadiums across 10 states have hosted the Super Bowl due to the states’ extreme NFL fan dedication. For example, California has hosted the Super Bowl 13 times, and maybe rightfully so. Super Bowls held in stadiums throughout Californa are some of the most-attended in NFL history.

The #1 highest-attended Super Bowl ever was Super Bowl XIV held at the Rose Bowl in 1980. About 103,985 American football fans packed themselves into the Rose Bowl to see the Pittsburgh Steelers play the Los Angeles Rams. The second highest-attended Super Bowl (103,667 fans attended) was Super Bowl XVII, also held at the Rose Bowl in 1983. Any guesses where the third highest-attended Super Bowl was located? The Rose Bowl in 1977. What is it about Pasadena, Califonia or its stadium that draws the largest Super Bowl crowds? Perhaps it’s the large stadium capacity. As it happens, the Rose Bowl is the 15th largest stadium in the world with a capacity: 90,888. Note the other large stadiums on this map.

2011’s Super Bowl XLV broke the Rose Bowl’s trend when the Cowboys Stadium in Arlington, Texas, saw 103,219 fans in attendance. It was the fourth best-attended Super Bowl. As for the fifth and sixth most well-attended? Super Bowls XXI and XXVII were both once again located at the Rose Bowl in Pasadena, California. Notably, the seventh and eighth best-attended Super Bowls also took place in California, but not at the Rose Bowl. Super Bowls VII and XIX were held at the Los Angeles Memorial Coliseum and the Stanford Stadium, respectively.

Future Super Bowl Locations

Since the Super Bowl’s location is chosen three to four years ahead of time, we already know the locations of Super Bowls LIV-LVIII.

Super Bowl Game Date & Season Venue City State Attendance Winning team Losing team Score
LIV February 2, 2020 2019 Hard Rock Stadium Miami Gardens Florida TBD 2019–20 NFC champion To be determined
LV February 7, 2021 2020 Raymond James Stadium Tampa Florida TBD 2020–21 AFC champion To be determined
LVI February 6, 2022 2021 SoFi Stadium Inglewood California TBD 2021–22 NFC champion To be determined
LVII February 5, 2023 2022 State Farm Stadium Glendale Arizona TBD 2022–23 AFC champion To be determined
LVIII February 4, 2024 2023 Mercedes-Benz Superdome New Orleans Louisiana TBD 2023–24 NFC champion To be determined

Super Bowl LIV will be Hard Rock Stadium’s first, although it won’t be the first for the city of Miami Gardens. The city’s Joe Robbie Stadium has hosted two previous Super Bowls while Miami Gardens’ Dolphin Stadium, Pro Player Stadium, and Sun Life Stadium have hosted one Super Bowl each. Super Bowl LV will be the third hosted at the Raymond James Stadium in Tampa, but it will be the fifth for the city itself. The other two Super Bowls located in Tampa were played at the Tampa Stadium.

The SoFi Stadium and its city of Inglewood will have its first chance at hosting a Super Bowl in 2022, and it will also be the State Farm Stadium’s first Super Bowl the following year. However, it won’t be the first for the city of Glendale. 2024 will see the Mercedes-Benz Superdome’s second Super Bowl. However, New Orleans, where the Superdome is located, is not inexperienced in hosting Super Bowls. Six Super Bowls have been held at the city’s other Superdome, the Louisiana Superdome, along with the three Super Bowls held at the Tulane Stadium.

Hopefully, the Super Bowl can expand it’s location preferences so that more football fans can watch a live game. What team would you love to see live? Pick from the Super Bowl winners and losers.