World War I

2. They were the first to come to the aid of Serbia after Austria-Hungary declared war.
4. Leader of the Bolsheviks.
6. They tried to initiate revolution among Russia's working class.
7. Name of the German Foreign Minister who tried to bring Mexico into the war.
9. President of the United States during WWI.
10. Sunk on April 14th, 1912.
12. Presidents Wilson’s proposal to what should be done in Europe after the war ended.
13. This weapon is first operated and used in warfare in WWI.
14. The world's first commercial radio station.
15. Killed twice as many people during this time period.

1. First declared war on by Austria-Hungary, this country was blamed for Franz Ferdinand's death and was believed to be how WWI began.
3. After Lenin returned from exile in 1917, he and his bolshevik took over this city, the former capital of Russia.
5. Movement of African-Americans during and after WWI from the southern United States to avoid job discrimination.
8. Although the League of Nations was the idea by this country, they never joined it.
11. Became leader of the Soviet Union after Lenin died.