World War 1 started in 1913
Imperialism, nationalism, militarism, and alliances were all causes of the war
The communist revolution already happened by the outbreak of war in 1914
Archduke Franz Ferdinand of Austria was assassinated in the country of Bosnia in 1914
The Russians became protective of the serbs after Austria started attacking them
The Triple Entente included Great Britain, France, and Austria.
The Triple Alliance contained Germany, Austria, and Italy.
Britain and Germany had a naval arms race in the years leading up to the war.
Austria wanted the territory of Alsace-Lorraine back from France near the outbreak of the war
Russia and Austria were competing for territories in the balkans before WW1