Innovations & Inventions
World War 1 & US Involvement
Politics, Law & Government
Natural Disasters & Global Events
Culture & Society
100

In 1910 this youth organization was founded in the United States to promote outdoor skills and character.

Boy Scouts of America

100

In April 1917 Congress took this action, pulling the United States into World War I on the side of the Allies.

Declaring war on Germany

100

This president won reelection in November 1916, campaigning on keeping the U.S. out of war

Woodrow Wilson

100

This famed ocean liner sank in 1912 after hitting an iceberg on its maiden voyage.

Titanic

100

In 1912 this popular sporting venue opened in Boston, home to one of America’s oldest baseball teams.

Fenway Park

200

This aviation first took place in Dayton, Ohio, marking the only joint flight of the Wright Brothers in 1910.

The flight by Wilbur and Orville Wright at Huffman Prairie

200

The British gave the U.S. this intercepted message in February 1917, proposing a German-Mexican alliance.

Zimmermann Telegram

200

In 1912 this amendment was ratified to allow the federal government to collect this.

16th Amendment (income tax)

200

One of the largest volcanic eruptions in recorded history occurred in June 1912 at this Alaskan volcano.

Mount Katmai

200

The Girl Scouts were originally formed in 1912 under this name.

American Girl Guides

300

In 1913, this company introduced the first moving assembly line, drastically reducing automobile construction time.

Ford Motor Company

300

U.S. forces first arrived in this continent in June 1917 to fight with Allied troops.

Europe

300

This 1912 constitutional change allowed Americans to elect U.S. Senators directly

17th Amendment

300

Beginning in 1918, this global pandemic killed millions worldwide and hundreds of thousands in the U.S.

Spanish flu

300

This annual auto race was first run in Indianapolis in 1911

Indianapolis 500

400

A major banking reform passed in December 1913 created this system to oversee U.S. financial stability.

Federal Reserve System

400

Signed in June 1919, this treaty formally ended World War I.

Treaty of Versailles

400

In February 1917 the U.S. cut diplomatic ties with this nation prior to entering World War I

Germany

400

After the Mexican Revolution, U.S. forces pursued Pancho Villa into this neighboring country in 1916.

Mexico

400

In 1915 this future president and general graduated from West Point

Dwight D. Eisenhower

500

In 1914, this garment was patented by Mary Phelps Jacob, later becoming a common item in women’s fashion.

Brassiere

500

Before joining the war, President Wilson proclaimed that the U.S. would stay officially this when the conflict began in Europe in 1914

Neutral

500

Sent to the states in December 1917, this amendment would outlaw the manufacture and sale of alcohol.

18th Amendment

500

In 1914 this monumental waterway was completed, allowing ships to transit between the Atlantic and Pacific Oceans.

Panama Canal

500

The U.S. Post Office began this type of aviation service in 1918, connecting New York, Philadelphia, and Washington

Airmail service