The Treaty of Paris of 1763 ended the French and Indian War/Seven Years' War between Great Britain and France, as well as their respective allies. In the terms of the treaty, France gave up all its territories in mainland North America, effectively ending any foreign military threat to the British colonies there.
In box one it was Nazi Germany and Soviet Russia, and they did that so they could invade Poland.
Pretty sure it was Jericho. Think VeggiTales, and the song "Joshua Fought the Battle of Jericho."
