Bought from Russia in 1867 for $7.2 million, this acquisition was mockingly referred to as "Seward’s Folly."
Alaska
Completed in 1914, this engineering marvel connected the Atlantic and Pacific Oceans.
Panama Canal
Before becoming President, he led a volunteer cavalry unit known as the "Rough Riders" during the Spanish-American War.
Teddy Roosevelt
Germany’s policy of sinking any ship in British waters without warning, regardless of its cargo or nationality.
Unrestricted Submarine Warfare
This was Woodrow Wilson’s comprehensive plan for a "just and lasting peace" after the war.
14 Points
The policy in which stronger nations extend their economic, political, or military control over weaker territories.
Imperialism
Imperialism was often driven by a desire for these, such as rubber, oil, and minerals, which were not readily available within U.S. borders.
Natural Resources
He was the U.S. President who campaigned on the slogan "He kept us out of war" but later asked Congress to "make the world safe for democracy."
Woodrow Wilson
This was the official US foreign policy position when World War I broke out in 1914.
Neutrality
Wilson’s 14th Point called for the creation of this international body to prevent future conflicts.
League of Nations
This policy, proposed by John Hay, aimed to ensure that all nations had equal trading rights in China.
Open Door Policy
This 19th-century belief that God intended the U.S. to expand across the continent was now applied to territories across the seas.
Manifest Destiny
The assassination of this Archduke of Austria-Hungary in Sarajevo is considered the immediate "spark" that ignited World War I.
Franz Ferdinand
This 1917 law required all men between certain ages to register for a military draft.
Selective Service Act
The mass movement of African Americans from the rural South to Northern industrial cities for jobs during the war.
Great Migration
The 1898 Treaty of Paris ended the Spanish-American War and gave the US Guam, Puerto Rico, and these islands for $20 million.
Philippines
This Rudyard Kipling poem suggested that Western nations had a moral obligation to "civilize" non-white populations.
White Man's Burden
This German Foreign Secretary sent a secret telegram to Mexico, promising them U.S. territory in exchange for an alliance against Washington.
Alfred Zimmerman
The sinking of this British passenger liner in 1915 killed 128 Americans and moved the US closer to war.
Lusitania
These 1917-1918 laws made it illegal to interfere with the draft or speak disloyally about the US government.
Espionage and Sedition Acts
He was the US President who eventually asked Congress for a declaration of war against Spain.
William McKinley
This "Splendid Little War" resulted in the U.S. gaining Guam, Puerto Rico, and the Philippines.
Spanish-American War
The name of the agreement that officially ended WWI?
Treaty of Versialles
These were the four long-term causes of WWI, often remembered by the acronym M.A.I.N.
militarism,alliances,imperialism and nationalism
In this 1919 case, the Supreme Court ruled that speech can be limited if it poses a "clear and present danger."
Schenck v. United States