This major non-European nation stayed neutral throughout most of the war, but its last-minute intervention provided the finishing blow to the four-year conflict
What is the United States?
100
The death of this Austrian noble is widely regarded as the "proximate cause" (or immediate cause) of the war
Who is Archduke Franz Ferdinand?
100
This heavy, efficient type of gun was used briefly during the American Civil War, but used heavily for the first time during World War I
What is the machine gun?
100
This American President was re-elected on the slogan "he kept us out of the war," ironically asking Congress for a declaration of war just a few months later
Who is Woodrow Wilson?
100
This program enacted by the US government sought to prepare the nation for war if it happened
What is the preparedness program?
200
This major European power plowed through two neutral countries to surprise-attack France, but was stopped at the Battle of the Marne and did not advance again throughout most of the war
What is Germany?
200
This German message to the Mexican government was intercepted by Great Britain and forwarded to the US government, angering the American people
What is the Zimmermann Telegraph?
200
This defense-based strategy was responsible for the senseless mass slaughter of millions of soldiers, proving that technology had outpaced tactics
What is trench warfare?
200
This German leader, the last of his kind, was mostly responsible for their entry into the war
Who is Kaiser Wilhelm?
200
This system of naval warfare enacted by Germany angered the American people as it allowed non-military ships to be sunk by German submarines
What is unrestricted submarine warfare?
300
This small European nation declared its neutrality early in the war, but was steamrolled by a belligerent German nonetheless
What is Belgium?
300
The sinking of this British ship, along with 114 American citizens, further strained US-German relations
What is the Lusitania?
300
This German underwater innovation provided the first true challenge to Great Britain's naval supremacy
What is the U-boat?
300
This "battling" US Senator and former Wisconsin governor lead the Republican anti-war movement in Congress
Who is Robert or "Battling Bob" La Follette?
300
This group of ideas or "points," conceived by President Wilson, provided an idealistic aspiration for ending the war
What are the fourteen points?
400
This tiny Eastern European nation was attacked by Austria-Hungary when one of its rogue citizens assassinated an important Archduke
What is Serbia?
400
This "system" of international relations created an atmosphere of hostility in Europe that eventually led to open war
What is the alliance system?
400
This chemical weapon was later used by Iraqi dictator Saddam Hussein against his own people, and caused horrific painful deaths in the trenches of World War I
What is mustard gas?
400
This US Secretary of State and perennial presidential candidate resigned after he feared that the US Government was gearing up for war
Who is William Jennings Bryant?
400
This cease-fire agreement ended the war, allowing a permanent treaty to be negotiated at a later date
What is the armistice?
500
This young, rogue anarchist assassinated the Austrian Archduke, sparking a war that he could not possibly have imagined
Who is Gavrilo Princip?
500
These three "isms," promoted by the governments of European and American countries, created conditions that made it possible for people to widely support the brutal war
What are militarism, nationalism, and imperialism?
500
This chemical weapon was later used by Iraqi dictator Saddam Hussein against his own people, and caused horrific painful deaths in the trenches of World War I
What is mustard gas?
500
This blundering German foreign minister made the critical diplomatic error which angered the American people into agreeing to war
Who is Arthur Zimmermann?
500
These promises made by the German government sought to keep the United States out of the war in exchange for safe naval passage