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Precambrian

(Encyclopedia)Precambrian, name of a major division of geologic time (see Geologic Timescale, tablegeologic timescale, table), from c.5 billion to 570 million years ago. It is now usually divided into the Archean a...

Adams, John, 2d President of the United States

(Encyclopedia)Adams, John, 1735–1826, 2d President of the United States (1797–1801), b. Quincy (then in Braintree), Mass., grad. Harvard, 1755. John Adams and his wife, Abigail Adams, founded one of the most di...

Cretaceous period

(Encyclopedia)Cretaceous period krĭtāˈshəs [key], third and last period of the Mesozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table), lasting from approximately 144 to 65 millio...

Lee, Charles

(Encyclopedia)Lee, Charles, 1731–82, American Revolutionary army officer, b. Cheshire, England. He first came to America to serve in the French and Indian War and took part in General Braddock's disastrous campai...

Key West

(Encyclopedia)Key West, city (1990 pop. 24,832), seat of Monroe co., S Fla., on an island at the southwestern extremity of the Florida Keys; inc. 1828. About 150 mi (240 km) from Miami (but only 90 mi/145 km from C...

Great Barrier Reef

(Encyclopedia)Great Barrier Reef, largest complex of coral reef in the world, c.1,250 mi (2,000 km) long, in the Coral Sea, forming a natural breakwater for the coast of Queensland, NE Australia. Composed of more t...

Gates, Horatio

(Encyclopedia)Gates, Horatio, c.1727–1806, American Revolutionary general, b. Maldon, Essex, England. Entering the British army at an early age, he fought in America in the French and Indian War and served in the...

Hudson Bay

(Encyclopedia)Hudson Bay, inland sea of North America, c.475,000 sq mi (1,230,000 sq km), c.850 mi (1,370 km) long and c.650 mi (1,050 km) wide, E central Canada. Hudson Bay and James Bay (its southern extension) a...

apprenticeship

(Encyclopedia)apprenticeship, system of learning a craft or trade from one who is engaged in it and of paying for the instruction by a given number of years of work. The practice was known in ancient Babylon, Egypt...

plain

(Encyclopedia)plain, large area of level or nearly level land. Elevated plains are called plateaus, or tablelands, and very low, wet plains are called swamps. Plains have different names in different climates and c...