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Sierra Madre, mountain system, Mexico

(Encyclopedia)Sierra Madre dĕl so͝orˈ [key] is a tumbled, broken mass of uptilted mountains that touch the Pacific coast but form into no clearly defined range. It spreads over S Mexico between the volcanic belt...

Willing, Thomas

(Encyclopedia)Willing, Thomas, 1731–1821, American merchant and financier, b. Philadelphia. He studied law in London. Returning to Philadelphia in 1749, he entered his father's business and later established with...

watershed

(Encyclopedia)watershed, elevation or divide separating the catchment area, or drainage basin, of one river system or group of river systems from another system or group of systems. The term is also often used syno...

Berlin Decree

(Encyclopedia)Berlin Decree, 1806, decree issued in Berlin by Napoleon I on Nov. 21 in answer to the British blockade. Claiming that the British blockade of purely commercial ports was contrary to international law...

Major Planets of the Solar System (table)

(Encyclopedia)Major Planets of the Solar System ...

French Union

(Encyclopedia)French Union, 1946–58, political entity established by the French constitution of 1946. It comprised metropolitan France (the 90 departments of continental France and Corsica); French overseas depar...

Milan Decree

(Encyclopedia)Milan Decree, issued Dec., 1807, by Napoleon I of France in an attempt to enforce the Continental System. Designed to strengthen the Berlin Decree, it authorized French warships and privateers to capt...

McKean, Thomas

(Encyclopedia)McKean, Thomas məkānˈ, –kēnˈ [key], 1734–1817, political leader in the American Revolution, signer of the Declaration of Independence, b. New London, Pa. He settled at New Castle, Del., and b...

plate tectonics

(Encyclopedia)CE5 Plate tectonics: Map of the world showing major plates and plate boundaries CE5 Plate tectonics: Schematic model of the oceanic crust, showing the three types of plate boundaries plate tect...

Baldwin, Abraham

(Encyclopedia)Baldwin, Abraham, 1754–1807, American political leader, b. Guilford, Conn. After serving as a chaplain in the American Revolution, he studied law and in 1784 was admitted to practice in Georgia. He ...