76. FDR beats Herbert Hoover 1932

77. Gorbachev becomes Soviet Premier 1985

78. Max Planck proposes quantum theory of energy 1900

79. Scientists clone sheep in Scotland 1997

80. Congress passes interstate highway bill 1956

81. Panama Canal opens 1914

82. Friedan's The Feminine Mystique published 1963

83. Space Shuttle Challenger explosion 1/28/86

84. U.S. sends troops to South Korea. 1950

85. Violence erupts at Democratic National Convention in Chicago. Aug 1968

86. Freud publishes The Interpretation of Dreams 1900

87. China begins "Great Leap Forward" 1958

88. U.S. enters World War I 4/6/17

89. Babe Ruth hits 60th homer 9/30/27

90. Glenn becomes 1st American to orbit earth 2/20/62

91. Gulf of Tonkin resolution passed 1964

92. Pathfinder lands on Mars 1997

93. Hitler launches Kristallnacht 11/9/38

94. Churchill named UK Prime Minister 1940

95. Test-tube baby born 1978

96. Soviets blockade West Berlin 1948

97. Bill Gates and Paul Allen start Microsoft 1975

98. Chernobyl nuclear plant explosion 1986

99. Scopes Trial 1925

100. Surgeon General warns of smoking-related health hazards. Jan 1964