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Saskatchewan, province, Canada

(Encyclopedia) CE5 SaskatchewanSaskatchewansəskăchˈəwən, –wänˌ, săsˌ– [key], province (2001 pop. 978,933), 251,700 sq mi (651,903 sq km), W Canada. Original inhabitants of Saskatchewan include…

Sioux

(Encyclopedia) Sioux or Dakota, confederation of Native North American tribes, the dominant group of the Hokan-Siouan linguistic stock, which is divided into several separate branches (see Native…

American Indian Archaeological Sites

  The American Indian archaeological record is one of the richest in the world. There are tens of thousands of American Indian sites in the…

Missouri, river, United States

(Encyclopedia) Missouri, river, c.2,565 mi (4,130 km) long (including its Jefferson-Beaverhead-Red Rock headstream), the longest river of the United States and the principal tributary of the…

Congress of the United States

(Encyclopedia) Congress of the United States, the legislative branch of the federal government, instituted (1789) by Article 1 of the Constitution of the United States, which prescribes its…

Pleistocene epoch

(Encyclopedia) Pleistocene epochPleistocene epochplīˈstəsēn [key], 6th epoch of the Cenozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table). According to a…

Selected Biographies: A

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z More Biographies Don't see the biography you're looking for? Search 30,000+ biographies…

copper, chemical element

(Encyclopedia) copper, metallic chemical element; symbol Cu [Lat. cuprum=copper]; at. no. 29; at. wt. 63.546; m.p. 1,083.4℃; b.p. 2,567℃; sp. gr. 8.96 at 20℃; valence +1 or +2. Copper and some of its…

wool

(Encyclopedia) wool, fiber made from the fleece of the domestic sheep. In the United States, by the Wool Products Labeling Act of 1939, the term wool may be applied only to fabrics made…