The mediate cause for World War 1 the assassination of Archduke Franz Ferdinand and his pregnant wife Sophie. However there were many other causes of WW1. WW2 started because hitler didn’t like Jewish people so he built an army to destroy all Jewish people wich then started the war.
Answer:
1917
Explanation:
The Tsarist autocracy collapsed in 1917 due to the following reasons— (a) Miserable Condition of the Workers (i) The industrial workers in Russia got very low wages. (ii) They had very long working hours, sometimes upto 15 hours.