Years
Weapons
Countries
Who declared war on who?
100

Where year did Archduke Franz Ferdinand get assassinates?

1914

100

What weapon has 100 rounds a min?

Machine Guns

100

What was the first country to declare war?

Austro-Hungarian 

100

Who did Austro-Hungaria declare war on?

Serbia

200

What year did the Lusitania sink?

1915

200

What causes blindness, blisters, death?

Poison Gas

200

What country was blamed for the war?

Germany

200

Who did Russia Declare War on?

Austro-Hungaria

300

What year did the Zimmerman Telegram come about?

1917

300

What did the Germans dominate the seas with?

Submaries

300

What country suffered massive losses?

Russia

300

Who did Germany Declare War on?

Russia and France

400

What year did the Americans enter the war?

1917

400

What was used to spy behind enemy lines?

Aircraft

400

What were the central powers?

Germany, Austro-Hungaria, Bulgaria, Ottoman Empire

400

Who did Britain Declare War on?

Germany

500

What year did the war end?

1918
500

What was invented against trench warfare?

Tanks

500

What were the allied powers?

Britain, France, Russia, Italy, Japan

500

Who did America declare war on?

Germany

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