May 13 Mozart's opera "Apollo et Hyacinthus," premieres in Salzburg May 14 British government disbands Americans import duty on tea June 29 British passes Townshend Revenue Act levying taxes on America September 28 Gentlemen 17 forbid private slave transport India to Cape of Good Hope October 4 Prince Willem V marries Prussian princess Wilhelmina October 18 Boundary between MD and PA, Mason Dixon line, agreed upon December 16 Van Ritter von Glucks opera "Alceste" premiers
