How did Czar Nicholas II led to the 1917 Feb rev.(20marks)

i thk there are 3 pts to mention
1) he made Ru to join the First World War
-Russia was not fit for war,inefficient and corrupted govt was shown
-intensified defeats gave rise to many internal problems,,eg.food shortage
-even the army later on joined the Rev
2) he left his country to his wife
-he persoally took part in the war, his wife and Resputin control over Ru
- ppl discontent
3) Ineffective reform
-he cancelled 4 Dumas
-reforms under Stolypin were not effective in solving the social problems