(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…
(Encyclopedia) Pleistocene epochPleistocene epochplīˈstəsēn [key], 6th epoch of the Cenozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table). According to a…
At least 12,000 years ago According to a theory accepted by most anthropologists, the first women arrive in North America via the Bering land bridge from Asia.At least 2,000 years ago Women play…
Worst U.S. Forest Fires Whether you're talking about forest fires or kitchen fires, factory explosions or arson, when fires get out of control, the damage can be…
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Continents Africa Antarctica…
Here is a timeline about famous firsts by American women. This information includes such notable figures as the first published author in 1650 (Anne Bradstreet),…
(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…
(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…
The American Indian archaeological record is one of the richest in the world. There are tens of thousands of American Indian sites in the Southwest alone, where the dry climate has…
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