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Pi Day is an annual celebration of the mathematical constant π (pi). Pi Day is observed on March 14 (the 3rd month) since 3, 1, and 4 are the first three significant figures of π, and was first celebrated in the United States. [2][3] It was founded in 1988 by Larry Shaw, an employee of a science museum in San Francisco, the Exploratorium.
t. e. The number π (/ paɪ /; spelled out as " pi ") is a mathematical constant that is the ratio of a circle 's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics.
He was the leader of the Independence movement of the Dominican Republic against Spain in 1821 (d. 1846) [44] 1790 – Ludwig Emil Grimm, German painter and engraver (d. 1863) [45] 1800 – James Bogardus, American inventor and architect (d. 1874) [46] 1801 – Kristjan Jaak Peterson, Estonian poet (d. 1822) [47]
After independence, the American states were obliged to write constitutions establishing how each would be governed. For three years, from 1778 to 1780, the political energies of Massachusetts were absorbed in drafting a charter of government that the voters would accept.
Empire of Brazil – An empire created after Brazil declared its independence in 1822 and dissolved in 1889, now the countries of Brazil and Uruguay (who declared their independence in 1825, and was recognized in 1828). Central America – Existed from 1821 to 1841, broke up into Guatemala, Belize, El Salvador, Honduras, Nicaragua, and Costa Rica.
Self-determination[1] refers to a people 's right to form its own political entity, and internal self-determination is the right to representative government with full suffrage. [2][3] Self-determination is a cardinal principle in modern international law, binding, as such, on the United Nations as an authoritative interpretation of the Charter ...
Great Divergence. Maddison's estimates of GDP per capita at purchasing power parity in 1990 international dollars for selected European and Asian nations between 1500 and 1950, [1] showing the explosive growth of Western Europe and Japan in the 19th century. The Great Divergence or European miracle is the socioeconomic shift in which the ...
March is the third month of the year in both the Julian and Gregorian calendars. Its length is 31 days. In the Northern Hemisphere, the meteorological beginning of spring occurs on the first day of March. The March equinox on the 20 or 21 marks the astronomical beginning of spring in the Northern Hemisphere and the beginning of autumn in the ...