What are our sources of knowledge for Fourth Century Greece, and what were the main political, military, and intellectual trends from 404-336?

 What are our sources of knowledge for Fourth Century Greece, and what were the main political, military, and intellectual trends from 404-336? (i.e. stop at the death of Philip II.)

Describe in detail the developments and circumstances which led to Socrates' prosecution in 399. (Note: hit all the necessary angles: political/military context, Socrates' associates, intellectual climate; you should address Socrates' activities and his defense, but focus on historical context rather than lengthy generalizations about Socrates' personality.)