WWI 20TH Century PLEASE HELP

I've been very sick for the last couple of weeks, unfortunately I have missed quite a few history classes. It feels like I'm way behind everyone in the class, so I thought you guys could clear some of my questions up. The book doesn't help me at all
Here we go:


1)What were the factors that led to the outbreak of WWI?

2) Major social and political changes that took place in the late 19th early 20th centuries?

What were the main points of the platform of Lenin and the Bolshevik party in pre-Revolutionary Russia of 1917



Thank you
God Bless