What happened on June 30 ?
350 - Roman usurper Nepotianus, of the Constantinian dynasty, is defeated and killed by troops of the usurper Magnentius, in Rome
1651 - The Battle of Beresteczko ends with a Polish victory.
1688 - The Immortal Seven issue the Invitation to William, beginning the struggle for English independence from Rome which would culminate in the Glorious Revolution.
1758 - Seven Years' War: Battle of Domstadtl.
1805 - The U.S. Congress organizes Michigan Territory.
1864 - U.S. President Abraham Lincoln grants Yosemite Valley to California for "public use, resort and recreation."
1882 - Charles Guiteau hanged in Washington, DC for the shooting death of President James Garfield.
1883 - The first appearance of The Black Arrow by Robert Louis Stevenson in Young Folks; A Boys' and Girls' Paper of Instructive and Entertaining Literature.
1886 - The first transcontinental train trip across Canada departs from Montréal. It arrived in Port Moody, British Columbia on July 4 of the same year.
1905 - Albert Einstein publishes the article "On the Electrodynamics of Moving Bodies", where he introduces special relativity.
1906 - Congress passes the Meat Inspection Act and Pure Food and Drug Act.
1908 - The Tunguska impact event occurs in Siberia.
1912 - The Regina Cyclone hits Regina, Saskatchewan, killing 28. It remains Canada's deadliest tornado event.
1934 - The Night of the Long Knives, Adolf Hitler's violent purge of his political rivals in Germany, takes place.
1935 - The Senegalese Socialist Party holds its first congress.
1936 - Gone with the Wind by Margaret Mitchell published.
1944 - The Battle of Cherbourg ends with the fall of the strategically valuable port to American forces.
1956 - A TWA Super Constellation and a United Airlines DC-7 (Flight 718) collide above the Grand Canyon in Arizona, United States, killing 128.
1960 - Congo gains independence from Belgium.
1969 - Nigeria bans Red Cross aid to Biafra.
1971 - The crew of the Soviet Soyuz 11 spacecraft are killed when their air supply escapes through a faulty valve.
1971 - The 26th Amendment to the U.S. Constitution, lowering the voting age to 18, is ratified as Ohio becomes the 38th state to approve it.
1977 - Virginia Wade wins the Ladies Singles title at Wimbledon, the last British champion at the All England Club.
1978 - Willie McCovey becomes the 12th member of the 500 home run club with a home run at Fulton County Stadium in Atlanta, Georgia.
1990 - East and West Germany merge their economies.
1992- Former Prime Minister Margaret Thatcher has taken her place in the House of Lords as Baroness Thatcher of Kesteven.
1997 - China resumes sovereignty over the city-state of Hong Kong, ending 156 years of British colonial rule.
2005 - Spain legalizes same-sex marriage.