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Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that
This engraving by William Russell Birch shows Congress Hall (left), which was occupied by Congress f
Seven black members of Congress in 1871 are from left to right: Senator Hiram Revels (R-MS) and Repr
From 1965 to 1968, American troops in Vietnam conducted “search and destroy” missions to shatter ...
In 1979 Islamic militants held American embassy workers hostage in Tehran.
U.S. Subsurface Coal Mining: Output, Price, and Output per Worker-Hour, 1949–1994