The document summarizes key events around the Treaty of Versailles that ended World War 1: - Wilson's 14 Points plan for peace was not fully realized due to opposition from European leaders who wanted to harshly punish Germany. - The "Big Four" nations - France, Britain, Italy, and the U.S. - shaped the final treaty signed in June 1919 which forced Germany to accept war guilt and pay extensive reparations. - The U.S. Senate rejected the treaty in 1919 due to opposition over joining the League of Nations and concerns about getting drawn into future European wars, leaving the U.S. as an isolationist country.