Causes of WWI
Name four of the MAIN causes of World War I.
Militarism, Alliances, Imperialism, or Nationalism
What type of fighting used long defensive trenches on the Western Front?
Trench warfare
What was the German technology that attacked ships during WWI?
U-Boat
What British passenger ship was sunk by a German submarine in 1915?
The Lusitania
What year did World War I end?
1918
What does militarism mean?
Building up a country's military and believing military power is important.
What does stalemate mean?
A situation where neither side can advance or win.
What weapon released chemicals on the battlefield, like mustard and chlorine?
Poison Gas
What secret message asked Mexico to attack the United States?
The Zimmermann Telegram
What agreement stopped the fighting in WWI?
The Armistice
What is an alliance?
An agreement between countries to defend each other.
What dangerous area did soldiers have to cross between enemy trenches?
No Man’s Land
What armored vehicle developed by the British, helped soldiers cross trenches and break defenses?
Tank
What year did the United States enter World War I?
1917
Which country left the war after the Russian Revolution in 1917?
Russia
What event started World War I in 1914?
The assassination of Archduke Franz Ferdinand.
Name two new weapon used during World War I.
Machine guns, tanks, poison gas, submarines, or artillery.
What are armaments?
Military weapons and equipment.
Who was the President of the United States during WWI?
Woodrow Wilson
What is total war?
When an entire society, including civilians and industry, supports the war effort.
What does nationalism mean?
Strong pride and loyalty to one's country, often believing it is superior.
What major battle in 1916 caused extremely high casualties?
The Battle of the Somme
Why did machine guns cause stalemate on the Western Front?
They made attacking extremely deadly and prevented armies from advancing.
What was one reason the United States helped the Allies win the war?
Fresh troops, supplies, and industrial production boosted Allied strength and morale.
About how many people died in World War I?
About 16–20 million people.