Russian Revolution

The Russians had a revolution because of the February and October revolution. The February revolution was caused because of Tsar Nicholas II was removed from power. This was because he was blamed for all the crisis that had happened in WWI. The October revolution was caused because the overturn of interim government and the establishment of the Soviet Unions. Some of the major causes of the Russian Revolution was social and economic changes. Also because of political issues. The leaders of the Russian Revolution was Vladimir Lenin, Gregory Zinoviev, Lev Kamenev, Anatoli Lunacharsky, and Alexandra Kollontai. They were communist who opposed the war. "Peace, love and bread" was a a quote be Lenin during the October revolution. He promised peace, love and bread to the people of Russia after the war.

Causes of WW1

Nationalism is a main reason of WWI because Europe thought that they were better than everyone else and every other country. So countries like Elba, Britain, Austria, Prussia and Russia went against Europe. 

Militarism is a main reason of WWI also because all the countries in the hostile camps were building large armies. So then a large class of powerful and professional military officers conquered the civil authorities. However these armies made plans for mobilization. But these secret battle plans nourished greater fear and hatred.

Assassination of Franz Ferdinand was another main reason to the WWI because since Ferdinand was assassinated in Austria, countries like Russia tried to put the blame on Austria. And then countries after countries started declaring war on each other. Then leading to one big world with two alliances.