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Il y a 16 heures · James Madison (March 16, 1751 [b] – June 28, 1836) was an American statesman, diplomat, and Founding Father who served as the fourth president of the United States from 1809 to 1817. Madison was popularly acclaimed the "Father of the Constitution" for his pivotal role in drafting and promoting the Constitution of the United States and the ...
Il y a 16 heures · History. The Platonic solids have been known since antiquity. It has been suggested that certain carved stone balls created by the late Neolithic people of Scotland represent these shapes; however, these balls have rounded knobs rather than being polyhedral, the numbers of knobs frequently differed from the numbers of vertices of the Platonic solids, there is no ball whose knobs match the 20 ...
