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June 4 - Tonga gains independence from the United Kingdom.

June 8 - A coup in Argentina brings a new junta of service chiefs; on June 18, Roberto M. Levingston becomes President.

June 10 - U.S. President Richard Nixon signs a measure lowering the voting age to 18.

June 11 - The United States gets its first female generals: Anna Mae Hays and Elizabeth P. Hoisington.

June 21 - Brazil defeats Italy 4-1 to win the 1970 FIFA World Cup.

June 22 - The English rock band Led Zeppelin performs in Iceland, with the visit inspiring them to write the Immigrant Song.

June 24 - The United States Senate repeals the Gulf of Tonkin Resolution.

June 25 - The Greater London Council's Policy and Resources committee endorses the "Fleet Line" and the extension of the Piccadilly Line to Heathrow Airport.

June 28 - U.S. ground troops withdraw from Cambodia.

July 1 - Colorado State College changes its name to University of Northern Colorado.