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Houston
(Encyclopedia)Houston, city (2020 pop. 2,304,580), seat of Harris co., SE Tex., a deepwater port on the Houston Ship Channel; inc. 1837. Harrisburg (now part of Hou...Strategic Defense Initiative
(Encyclopedia)Strategic Defense Initiative (SDI), former U.S. government program responsible for research and development of a space-based system to defend the nation from attack by strategic ballistic missiles (se...Thatcher, Margaret Hilda Roberts Thatcher, Baroness
(Encyclopedia)Thatcher, Margaret Hilda Roberts Thatcher, Baroness, 1925–2013, British political leader. Great Britain's first woman prime minister, nicknamed the “Iron Lady” for her uncompromising political s...steamship
(Encyclopedia)steamship, watercraft propelled by a steam engine or a steam turbine. Despite such innovations as turbo-electric drive, which converts steam energy into rotational power for turning the propeller...ship
(Encyclopedia)ship, large craft in which persons and goods may be conveyed on water. In the U.S. Navy the term boat refers to any vessel that is small enough to be hoisted aboard a ship, and ship is used for any la...Virgin Islands
(Encyclopedia)CE5 Virgin Islands, group of about 100 small islands, West Indies, E of Puerto Rico. The islands are divided politically between the United States and Great Britain. Although constituting the weste...disarmament, nuclear
(Encyclopedia)disarmament, nuclear, the reduction and limitation of the various nuclear weapons in the military forces of the world's nations. The atomic bombs dropped (1945) on Japan by the United States in World ...navigation
(Encyclopedia)navigation, science and technology of finding the position and directing the course of vessels and aircraft. The next great revolution in navigation occurred in the 20th cent., when radio signals ...Charleston, cities, United States
(Encyclopedia)Charleston. 1 City (2020 pop. 17,286), seat of Coles co., E Ill.; inc. 1835. Charleston is an industrial, rail, and trade center located in an ...Persian Gulf Wars
(Encyclopedia)Persian Gulf Wars, two conflicts involving Iraq and U.S.-led coalitions in the late 20th and early 21st cent. The First Persian Gulf War, also known as the Gulf War, Jan.–Feb., 1991, was an armed co...Browse by Subject
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