15 June

1846 - Oregon Treaty

On 15 June 1846, the Oregon Treaty set the boundary between the US and British Canada.

1844 - Vulcanized rubber patent

On 15 June 1844, Charles Goodyear patented the vulcanization of rubber.

1215 - Magna Carta

On 15 June 1215, King John of England sealed Magna Carta, a milestone of liberties and the rule of law.