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Pylos

(Encyclopedia) PylosPylospīˈlŏs [key], ancient harbor, Messenia, SW Greece, on a bay of the Ionian Sea. Excavations have revealed a great Mycenaean palace of the 13th cent. b.c., perhaps the dwelling…

Missouri Compromise

(Encyclopedia) Missouri Compromise, 1820–21, measures passed by the U.S. Congress to end the first of a series of crises concerning the extension of slavery. By 1818, Missouri Territory had gained…

silicate

(Encyclopedia) silicate, chemical compound containing silicon, oxygen, and one or more metals, e.g., aluminum, barium, beryllium, calcium, iron, magnesium, manganese, potassium, sodium, or zirconium…

Harrison, William Henry

(Encyclopedia) Harrison, William Henry, 1773–1841, 9th President of the United States (Mar. 4–Apr. 4, 1841), b. “Berkeley,” Charles City co., Va.; son of Benjamin Harrison (1726?–1791) and…

Bank of the United States

(Encyclopedia) Bank of the United States, name for two national banks established by the U.S. Congress to serve as government fiscal agents and as depositories for federal funds; the first bank was…

ammonium nitrate

(Encyclopedia) ammonium nitrate, chemical compound, NH4NO3, that exists as colorless, rhombohedral crystals at room temperature but changes to monoclinic crystals when heated above 32℃. It is…

chalk

(Encyclopedia) chalk, mineral of calcium carbonate, similar in composition to limestone, but softer. It is characteristically a marine formation and sometimes occurs in great thickness; the chief…

Linear Scripts

(Encyclopedia) Linear Scripts, forms of Minoan writing. The earliest Minoan writing consisted of pictographs, called Cretan hieroglyphs, which date from about 2000 b.c. The first linear script,…

Falmouth, town, England

(Encyclopedia) Falmouth Falmouth fălˈməth [key], town, Cornwall, SW England, on a small peninsula between Falmouth…

Nadal, Rafael

(Encyclopedia) Nadal, Rafael (Rafael Nadal Parera), 1986–, Spanish tennis player, b. Majorca. Widely regarded as the greatest clay-court player ever, “Rafa” turned professional at 15. In 2005 he won…