The Russian Revolution

The Russian Revolution is the collective term for the series of revolutions in Russia in 1917, which destroyed the Tsarist autocracy and led to the creation of the Soviet Union. The Russian Revolution of 1917 is also called the Bolshevik Revolution or the October Revolution. In 1917 there were actually two revolutions in Russia. One was the February Revolution in which the Tsar abdicated his throne and the Provisional Government took power. The other was the October Revolution in which the Provisional Government was overthrown by the Bolsheviks.
During the Russian Revolution, the Russian got involted into World War I, and during that time, when they were fighting to the Germany, they were losing so badly, lots of the people were kill during the war.
Bolsheviks was the leader of the Russian Revolution, the reason that the revolution starts because of the people were tiredof the government so they wanted a change.

Cause Of WWI

World War I was a military conflict that lasted from 1914 to 1918 and involved most of the world's great powers, assembled in two opposing alliances: the Allies (centred around the Triple Entente) against the Central Powers. The location were Europe, Africa and the Middle East (briefly in China and the Pacific Islands). It last for four years.
In the war of World War I, the side of the Allies, were made up of 27 states and those states are France, Britain, Italy, the United States, Rumania, Greece, Sebia and also Japan. Those countries were fought against the Central power, the countries are including Germany, Austria-Hungary, Turkey and Bulgaria.