March 22, 1972
The Equal Rights Amendment is passed by the U.S. Senate and sent to the states for ratification.
March 23, 1839
The initials “O.K.” appear in the Boston Morning Post as a common slang misspelling for “oll correct,” and the word “okay” enters American vernacular.
March 27, 1998
The Food & Drug Administration approves Viagra, an oral medication that treats impotence.