Twelve North African Christians, known as the Scillitan Martyrs, were executed for their religious beliefs.
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Mary Leakey discovered ancient skull remains in Tanzania, Africa.
Henry IV was crowned King of Germany at Aachen Cathedral.
The Apollo-Soyuz Test Project completed the world's first international space rendezvous.
John Lennon was given 60 days to leave the US.
American superhero movie 'Ant-Man' by Marvel was released.
