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United States Air Force Academy

(Encyclopedia) United States Air Force Academy, at Colorado Springs, Colo.; for training young men and women to be officers in the U.S. air force; authorized in 1954 by Congress. Temporary quarters were opened at th...

Sigel, Franz

(Encyclopedia) Sigel, Franz fränts sēˈgəl [key], 1824–1902, Union general in the American Civil War, b. Sinsheim, Baden, Germany. An officer in the army of Baden, he was a leader (1848–49) of the Baden revol...

Energy, United States Department of

(Encyclopedia) Energy, United States Department of, executive department of the federal government responsible for coordinating national activities relating to the production, regulation, marketing, and conservation...

San Luis Potosí, state, Mexico

(Encyclopedia) San Luis Potosí sän lo͞oēsˈ pōtōsēˈ [key], state (1990 pop. 2,003,187), 24,417 sq mi (63,240 sq km), central Mexico. San Luis Potosí is the capital. Most of the state lies on the eastern tab...

Arikara

(Encyclopedia) Arikara ərĭkˈərə [key], Native North Americans whose language belongs to the Caddoan branch of the Hokan-Siouan linguistic stock (see Native American languages). Archaeological evidence shows tha...

North Dakota

(Encyclopedia)  CE5 North Dakota, state in the N central United States. It is bordered by Minnesota, across the Red River of the North (E), South Dakota (S), Montana (W), and the Canadian provinces of Saskatchewan...

Milk, river, United States and Canada

(Encyclopedia) Milk, river, 729 mi (1,173 km) long, rising in the Rocky Mts., NW Mont. It flows N into Alberta, Canada, then in long curves eastward, S into Montana again, and generally SE to the Missouri River, ent...
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