The Cold War By AntoniaSumner Feb 4, 1945 The begining of the Cold War Aug 29, 1949 Russia tested its first atomic bomb Jan 30, 1950 Truman approved H-bomb development Jan 1, 1952 A-bombs developed by Britain Jul 1, 1958 July : NASA began Mercury project using Atlas rocket Aug 1, 1974 President Nixon resigns Sep 1, 1989 Hungary becomes independent Mar 1, 1990 Lithuania becomes independent Oct 3, 1990 Germany reunited Jun 8, 1991 End of the Cold War