WHAT HAPPENED ON 15. JUNE
Want to find out what all happened on 15. June

Charles Goodyear receives a patent for vulcanization, a process to strengthen rubber. (15. June 1844)

The Oregon Treaty establishes the 49th parallel as the border between the United States and Canada, from the Rocky Mountains to the Strait of Juan de Fuca. (15. June 1846)

Pig War: Ambiguity in the Oregon Treaty leads to the "Northwestern Boundary Dispute" between United States and British/Canadian settlers. (15. June 1859)

American Civil War: The Second Battle of Petersburg begins. (15. June 1864)

Arlington National Cemetery is established when 200 acres (0.81 km2) around Arlington Mansion (formerly owned by Confederate General Robert E. Lee) are officially set aside as a military cemetery by U.S. Secretary of War Edwin M. Stanton. (15. June 1864)

Atlantic Cable Quartz Lode gold mine located in Montana. (15. June 1867)

Henry Ossian Flipper becomes the first African American cadet to graduate from the United States Military Academy. (15. June 1877)

Eadweard Muybridge takes a series of photographs to prove that all four feet of a horse leave the ground when it runs; the study becomes the basis of motion pictures. (15. June 1878)

Crown Prince Wilhelm becomes Kaiser Wilhelm II; he will be the last Emperor of the German Empire. Due to the death of his predecessors Wilhelm I and Frederick III, 1888 is the Year of the Three Emperors. (15. June 1888)

The deadliest tsunami in Japan's history kills more than 22,000 people. (15. June 1896)

A fire aboard the steamboat SS General Slocum in New York City's East River kills 1,000. (15. June 1904)

Princess Margaret of Connaught marries Gustaf, Crown Prince of Sweden. (15. June 1905)

Representatives from England, Australia and South Africa meet at Lord's and form the Imperial Cricket Conference. (15. June 1909)

The Battle of Bud Bagsak in the Philippines ends. (15. June 1913)

U.S. President Woodrow Wilson signs a bill incorporating the Boy Scouts of America, making them the only American youth organization with a federal charter. (15. June 1916)

John Alcock and Arthur Brown complete the first nonstop transatlantic flight when they reach Clifden, County Galway, Ireland. (15. June 1919)

Duluth lynchings in Minnesota. (15. June 1920)

A new border treaty between Germany and Denmark gives northern Schleswig to Denmark. (15. June 1920)

The U.S. Great Smoky Mountains National Park is founded. (15. June 1934)

First flight of the Vickers Wellington bomber. (15. June 1936)