World+War+I

World War I
This war was one of the bloodiest wars in history. It started when Franz Ferdinand, the Arch Duke of Austria, was assassinated by a Serbian. Austria-Hungary promptly declared war on Serbia and thus its allies followed suit. Then Serbia's allies joined in on the fight and most of the continent in Europe was consumed by war. America originally intended to stay out of the war but after the bombing of Pearl Harbor decided it was time to take action. This war was the first to use trench and biological warfare and the first to have aircraft involved in the fighting as well. One of the most shocking facts is that a good portion of the casualties resulted from disease from the poor living conditions of the trenches. Eventually the fighting came to an end largely because of the help of the U.S. with its main allies England and France.