Which of these events happened in the 20th Century?

Neil Armstrong walked on the moon. Nixon was not impeached, but resigned. The first successful coup occurred with the assassination of JFK.

the first action that caused many creek indians to turn against william mcintosh was when mcintosh a) supported the united states during the creek war of 1813–1814. b) attempted to stop the sale of creek land to the u.s. government. c) seized control of over 1,000 acres of land belonging to the creeks.