Mathematics includes the study of such topics as quantity (number theory), structure (algebra), space (geometry), and change (analysis). It has no generally accepted definition. Mathematicians seek and use patterns to formulate new conjectures; they resolve the truth or falsity of such by mathematical proof. When mathematical structures are good models…
View More Themes: MathematicsAstronomy is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave…
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The House of Habsburg was one of the most prominent royal houses of Europe in the 2nd millennium. The house takes its name from Habsburg Castle, a fortress built in the 1020s in present-day Switzerland by Radbot of Klettgau, who named his fortress Habsburg. His grandson Otto II was the…
View More Themes: House of HabsburgThe German colonial empire (Deutsches Kolonialreich) constituted the overseas colonies, dependencies and territories of Imperial Germany. Unified in the early 1870s, the chancellor of this time period was Otto von Bismarck. Short-lived attempts of colonization by individual German states had occurred in preceding centuries, but crucial colonial efforts only began…
View More German Colonial EmpireIsrael, officially known as the State of Israel, is a country in Western Asia. It is situated on the south eastern shore of the Mediterranean Sea and the northern shore of the Red Sea. In its Basic Laws, Israel defines itself as a Jewish and democratic state, and the nation…
View More IsraelHong Kong, officially the Hong Kong Special Administrative Region of the People’s Republic of China, is a metropolitan area and special administrative region of China on the eastern Pearl River Delta in South China. The Colony of Hong Kong became part of the British Empire after the Qing Empire ceded…
View More Hong KongBritish Hong Kong was a colony and dependent territory of the British Empire from 1841 to 1997, apart from a brief period under Japanese occupation from 1941 to 1945. The colonial period began with the occupation of Hong Kong Island in 1841 during the First Opium War. The island was…
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Hawaii is a U.S. state in the Western United States, composed entirely of islands, and the only state in the tropics. Hawaii is also one of a few U.S. states to have once been an independent nation. Settled by Polynesians some time between 124 and 1120, Hawaii was home to…
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The Hawaiian Kingdom, or Kingdom of Hawaiʻi, was an independent state on the Hawaii Islands. The country originated in 1795, when the warrior chief Kamehameha the Great, of the independent island of Hawaiʻi, conquered the independent islands of Oʻahu, Maui, Molokaʻi, and Lānaʻi and unified them under one government. In…
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The Territory of Hawaii or Hawaii Territory was an organized incorporated territory of the United States that existed from April 30, 1900 until August 21, 1959. On July 4, 1898, the United States Congress passed the Newlands Resolution authorizing the U.S. annexation of the Republic of Hawaii, and five weeks…
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