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12 Aug 1990
The largest dinosaur fossil is found.
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22 Jan 1943
World record for fastest temperature change.
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29 Dec 1890
The Wounded Knee Massacre took place.
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2 Nov 1889
North Dakota and South Dakota became the 39th & 40th states to join the United States of America.
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15 Aug 1876
The Indian Appropriations Act added the sell or starve clause.
