Russian revolution: 1. One major cause of the 1917 revolutions was an angry industrial working class. The conditions the working class lived in were poor and their working supplies were extremely outdated. The majority of the working class disliked the rich landowners who profited off their work.
2. Nicholas II rule is considered a major reason for the revolution. Nicholas forced Russia into World War I when it was severely unprepared. They suffered dreadful losses. This was just one reason why the working class hated him.
I hope this helps!