The World Trade Center twin towers were opened in 1973.
Eleven members of the Israeli Olympic team were taken hostage and killed in Munich by the Palestinian group Black September.
President Nixon resigned in 1974.
Three Mile Island meltdown happened in 1979 and was the worst accident in U.S. nuclear power plant history.
During the oil crisis in 1979, license plates ending in odd numbers could buy gas on odd number days and even number plates on even days.
Lyme disease is named after the town of Lyme, Connecticut, where several cases were identified in 1975.
The IRS regulated alcohol, tobacco, and firearms, until the ATF became its own bureau in 1972.