Shapur I became co-emperor of the Sasanian Empire with his father Ardashir I.
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Cardinal Bellarmine condemned Galileo for stating that the earth revolved around the sun.
The Battle of Fort Sumter in South Carolina between the United States and the Confederate States started the American Civil War.
The 'Twentieth Century Dinosaurs' exhibit opened at the Smithsonian Institution Museum of Natural History.
Rock Around The Clock by Bill Haley and His Comets was recorded.
The first Space Shuttle mission was launched.
