I think you forgot to give the options along with this question. I am answering the question based on my knowledge and research. The historical event that would be most useful to include would be President Johnson's escalation of the Vietnam War after the Tonkin Gulf incident. I hope the answer helps you. <span />
Answer:
SOLDIERS
Explanation:
PLAY GOD OF WAR OR WATCH 300, ALSO IF YOU PLAY HALO REMEMBER SPARTANS ARE KILLING MACHINES ALWAYS ASSOCIATE SPARTANS WITH SOLDIERS.
1. Germany was forced to pay nearly half a trillion USD (in todays money) in reparations
2. Germany's Rhineland in the west was to be occupied by the allies so they couldn't invade France
3. Germany could only have a tiny military, with essentially no navy or air force
4. Germany needed to accept full responsibility for the war
5. Germany loses all of its colonies in Africa, Asia, and the pacific, and much of its valuable eastern land is given to Poland.
Think the right answer is b.