In History, Today on June 6

Gustav Vasa was elected King of Sweden, marking the end of the Kalmar Union and the beginning of modern Sweden.

Queen Christina of Sweden abdicated the throne and was succeeded by her cousin Charles X Gustav.

The Ashmolean Museum in Oxford, England, opened as the world's first university museum.

Napoleon's brother, Joseph Bonaparte, was crowned King of Spain.

The Young Men's Christian Association (YMCA) was founded in London.

The electric iron was patented by Henry W. Seely in New York City.

The eruption of Novarupta in Alaska began, which would become the largest volcanic eruption of the 20th century.

The first drive-in theater opened in Camden, New Jersey, USA.

D-Day: Allied forces launched a massive invasion of Nazi-occupied France, landing on the beaches of Normandy.

Senator Robert F. Kennedy died from gunshot wounds inflicted the previous day, after being shot by Sirhan Sirhan in Los Angeles.

The video game Tetris was released in the Soviet Union.

The grave of Dr. Josef Mengele, a Nazi war criminal, was discovered in Embu, Brazil, under the name Wolfgang Gerhard.

The first World Oceans Day was celebrated, following the 1992 Earth Summit in Rio de Janeiro.

Eastern Mediterranean Event: A large airburst occurred over the Mediterranean Sea, detected by infrasound sensors and satellites. The event was caused by a meteoroid explosion with an estimated yield of 26 kilotons of TNT.

The 60th anniversary of D-Day was commemorated with ceremonies attended by world leaders, including U.S. President George W. Bush and French President Jacques Chirac, in Normandy, France.

The Transit of Venus, a rare astronomical event where Venus passes directly between the Earth and the Sun, was visible from Earth. This was the last such event until 2117.

The G7 summit was held in Schloss Elmau, Germany, where leaders discussed global economic issues, climate change, and security challenges.

The United Nations General Assembly elected Belgium, the Dominican Republic, Germany, Indonesia, and South Africa as non-permanent members of the UN Security Council for the 2019-2020 term.