World War The July Crisis 1914 Battle Tannenberg First Battle the Marne British Blockade Germany Starts Christmas Truce First Gas the western Front, Second Battle Ypres Lusitania Sunk Fist Battle the Isonzo Central Powers Invade Serbia The Battle Ctesiphon Bat...

Cold War The atomic against Japan Berlin Wall Falls Berlin Wall Iron Curtain Apollo Yalta Conference Korean War Warsaw Pact President Nixon extends Vietnam Columbia Cold War Ends Roosevelt, Truman Truman, Eisenhower Nixon, Ford, Carter Kennedy, Johnson, Nixon ...