“Harry Potter and the Half-Blood Prince” movie by J.K. Rowling was released.
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Boeing was incorporated by William E. Boeing.
The first-ever international crewed space mission was jointly launched by the US and the USSR.
The Battle of Grunwald began.
English Jesuit priest Edmund Campion was captured by a spy named George Eliot and taken to London.
President Jimmy Carter's brother Billy registered as a foreign agent in Libya.