1970's By kaitlyngann Period: Jan 1, 1970 to Dec 31, 1979 1970's events Apr 4, 1970 Completion of the World Trade Center Oct 1, 1971 Opening of Disney World Mar 13, 1972 Email was invented by Ray Tomlinson Apr 30, 1973 The end of the Vietnam War Aug 9, 1974 President Nixon resigns over the Watergate Scandal Apr 4, 1975 Microsoft was founded Sep 14, 1976 First artificial gene was created in a test tube Aug 16, 1977 Elvis Presley dies Sep 3, 1978 Ultrasound was first used Sep 7, 1979 ESPN began broadcasting