World War I.

In 1914, the Archduke Franz Ferdinand of Autria-Hungary goes to Serbia to see what's up. Everythings fine until Serbian nationalist Gavrilo Princip shoots the Archduke. Autria-Hungary obviously doesn't like this. Germany tells Autria-Hungary to make Serbia pay for damages. Autria-Hungary comes up with a crazy list of punishment of Serbia. Serbia says no so Autria-Hungary declares war.

Now teams form up. Germany joins Autria-Hungary and Russia joins Serbia. Germany wanted to attack Russia so they went through Belgium to do it. Belgium, France, and Great Britain are allies so France was not happy with this and Great Britain declared war on Germany. Britain was afraid that if Germany beat France, they would lose their colonies.

The other countries felt that they had to protect their allies or they might lose their territory. So Turkey, Greece, Italy, and Romania joined the war.

The USA didn't want to get involved because it was "Europe's war". But the USA was secretly giving supplies to Great Britain. Germany found out and attacked a supply ship name Lusitania. Germany also tried to bribe Mexico into attacking the US. Britain found out and told the US and they were mad so in 1917 the US joined the war.

Germany knew they were done but attempted to make a final push at the Allies' weakest point before the US got there. They were doing pretty good until the Americans got there and wiped the floor with the Central powers. Meanwhile, Russia was out because the Russian citizens attempted to overthrow in the government in 1917.

Germany surrendered in 1918, at 11:00 on November 11. They signed the Treaty of Versailles. The Treaty of Versailles was so harsh that Germany would later on start the Second World War.