How did each of the following help to ignite the full scale revolution
It would help if you included “the following” so I could narrow down what you’re asking about. But since you wrote “policies of the Czars” I assume you’re talking about the Russian Revolution of 1917. Well, the Revolution is a very complex story with a variety of reasons but a basic outline goes like this:
A large segment of the Russian people had long been oppressed as serfs. They were emancipated in 1864, but much like in America, the system remained the same. Farming as tenants on a landowners lands was all they knew so not much changed. At the same time, the czars were trying to modernize and industrialize Russia but all that spending wasn’t doing much. So essentially, Russia started lagging behind the other Great Powers and this showed in their embarrassing loss to Japan in the Russo-Japanese War. Also, many of the former serfs started moving into the cities looking for work and were attracted to the socialist/Marxist
philosophies being spread at the time. Tensions finally exploded during World War I when Russia was badly losing the war and casualties were high. During WW1 faith was entirely lost in the Czar and revolution broke out.