1776 US Congress proclaims the Declaration of Independence and independence from Great Britain 1785 James Hutton, geologist, publicly reads an abstract of his theory of uniformitarianism for the first time at the meeting of the Royal Society of Edinburgh 1803 The Louisiana Purchase is announced to the American people by President Thomas Jefferson 1838 Huskar Colliery Mining Disaster in Silkstone England: mining pit floods drown 26 children, leads to 1842 'Mines and Collieries Act' bans women and children working underground 1934 Hungarian physicist Leo Szilard patents the chain-reaction design for the atomic bomb 2017 North Korea tests first successful intercontinental ballistic missile into Sea of Japan | 
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