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Tate, Allen

(Encyclopedia) Tate, Allen (John Orley Allen Tate), 1899–1979, American poet and critic, b. Winchester, Ky., grad. Vanderbilt Univ., 1922. He was one of the founders and editors of the Fugitive (1922…

Accurate Mechanical Clocks

Source: National Institute of Standards and Technology Physics Laboratory In Europe during most of the Middle Ages (roughly 500 to 1500 A.D.), technological advancement was at a virtual standstill…

Benjamin Bradley

inventorBorn: 1830? A slave, Bradley was employed at a printing office and later at the Annapolis Naval Academy, where he helped set up scientific experiments. In the 1840s he developed a steam…

Mason and Dixon's Line

Mason and Dixon's Line (often called the Mason-Dixon Line) is the boundary between Pennsylvania and Maryland, running at a north latitude of 39°43'19.11". The greater part of it was surveyed from…

manifest destiny

(Encyclopedia) manifest destiny, belief held by many Americans in the 1840s that the United States was destined to expand across the continent, by force, as used against Native Americans, if…

Yaqut al-Hamawi

(Encyclopedia) Yaqut al-HamawiYaqut al-Hamawiyäk&oomacr;tˈ äl-hämäwēˈ [key], 1179–1229, Arab geographer. Born in Byzantium, he was bought as a slave by a merchant, al-Hamawi. He was freed on the…

Phaedrus

(Encyclopedia) PhaedrusPhaedrusfēˈdrəs [key], fl. 1st cent. a.d., Latin writer, a Thracian slave, possibly a freedman of Augustus. He wrote fables in verse based largely on those of Aesop. The prose…

Hemings, Sally

(Encyclopedia) Hemings, Sally, 1773–1835, African-American slave owned by Thomas Jefferson, b. Charles City co., Va.; her original name was probably Sarah. Her father was John Wayles, Jefferson's…

Wilberforce, William

(Encyclopedia) Wilberforce, William, 1759–1833, British politician and humanitarian. He was elected to Parliament in 1780 and during the campaign formed a lifelong friendship with William Pitt, whose…

Norbert Rillieux

Born: 1806 Automated Sugar Refining. Rillieux automated modern sugar production and made it dramatically more efficient, while producing a much higher quality of sugar. It transformed the lives of…