| •1970 | Invasion of Cambodia |
| Four students shot and killed at Kent State University |
| Gulf of Tonkin Resolution repealed |
| •1971 | Environmental Protection Agency created |
| Pentagon Papers published |
| •1972 | Watergate break-in |
| •1973 | Endangered Species Act passed |
| War Powers Act passed |
| U.S. agrees to withdraw from Vietnam |
| •1973–1974 | OPEC oil embargo |
| •1974 | Nixon resigns |
| •1975 | North Vietnam defeats South Vietnam |
| •1977 | Department of Energy created |
| •1978 | Proposition 13 passed in California |
| •1979 | Moral Majority founded |
| Three Mile Island nuclear accident |
| •1981 | Reagan pushes Congress to pass the Economic Recovery Tax Act |
| •1982 | Ratification period expires for Equal Rights Amendment |
| •1990 | Bush signs Americans with Disabilities Act and Clean Air Act |