American Federation of Labor (AFL)-Congress of Industrial Organizations (CIO) merger.Two Mississippi men lynch Emmett Till, a fourteen-year-old boy.
Interstate Commerce Commission desegregates interstate public transportation.
First postwar U.S.–Soviet summit meeting.
Ngo Dinh Diem establishes the Republic of Vietnam.
U.S. advisers take over training of South Vietnamese army (ARVN).
Dr. Jonas Salk discovers the vaccine for polio.Rosa Parks, a forty-three-year-old African American civil rights activist, refuses to give up her seat to a white man on a bus in Montgomery, Alabama; she is arrested and fined, and the Montgomery bus boycott, organized by Reverend Martin Luther King, Jr., begins.