Because they were friends with Another Country that was at war
A teenager from Siberia killed a ruler
The main reason for the breakout of the world war was that the heir to the austrian-hungary throne was assassinated in Siberia. Austria laid down 10 conditions in front of Siberia which Siberia declined .Germany entered to show their support for Austria and Russia entered for Siberia. The war soon spread throughout Europe and was known as the first world war
The US did enter World War 1, though not till 1917.
Persia did NOT fight in World War 1.
1914
yes
During World War I, Siberia was part of the Russian Empire, which was led by Tsar Nicholas II. However, after the Russian Revolution in 1917, local governance in Siberia became more fragmented. Various factions, including the White Army, which opposed the Bolsheviks, and regional leaders emerged, but there wasn't a single, unified leader for Siberia during the war. The situation was further complicated by the civil war that followed the revolution.
Hitler was not in world war one, he was the leader of the Germans in world war two.
A SERBIAN nationalist killed Archduke Franz Ferdinand. That's the spark in the powder keg.
portugal started world war 1 in July 16,1761
1941
1914