1967
Artificial DNA
DNA synthesized for the first time.
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In 2012, Adam Lanza, age 20, killed 26 people at Sandy Hook Elementary School, in Newtown, Connecticut. The victims included 20 children between the ages of 6 and 7. Lanza killed himself while still inside the school.
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1799
George Washington died at age 67.
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1819
Alabama became the 22nd state in the United States.
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1911
Norwegian explorer Roald Amundsen became the first man to reach the South Pole, beating an expedition led by Robert F. Scott.
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1939
The Soviet Union was dropped from the League of Nations.
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1981
Israel formally annexed the Golan Heights.
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1985
Wilma Mankiller became the first woman to lead a major American Indian tribe as she took office as principal chief of the Cherokee Nation of Oklahoma.
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1989
Nobel Peace laureate Andrei D. Sakharov died in Moscow at age 68.
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2012
Adam Lanza, age 20, forced his way into Sandy Hook Elementary School, in Newtown, Connecticut, and killed 26 people. The victims included 20 children between the ages of six and seven.
