(Encyclopedia) transportation, conveyance of goods and people over land, across water, and through the air. See also commerce.
The first practical attempts at air transportation began with the…
(Encyclopedia) navy, originally, all ships of a nation, whether for war or commerce; the term navy now designates only such vessels as are built and maintained specifically for war. There have been…
(Encyclopedia) petroleum, oily, flammable liquid that occurs naturally in deposits, usually beneath the surface of the earth; it is also called crude oil. It consists principally of a mixture of…
FORCES NEWTONS TURNING FORCES COMBINED FORCES FIND OUT MORE DYNAMICS LAWS OF MOTION INERTIA MOMENTUM FIND OUT MORE FRICTION LUBRICATING MACHINERY STREAMLINING…
Adrenaline: (isolation of) John Jacob Abel, U.S., 1897. Aerosol can: Erik Rotheim, Norway, 1926. Air brake: George Westinghouse, U.S., 1868. Air conditioning: Willis Carrier, U.S., 1911.…
War of 1812The Civil WarSpanish-American War (1898–1899)Ludwig van Beethoven (1770–1827)Richard Wagner (1813–1883)Archive PhotosEdgar Allan Poe(1809–1849)The Library of Congress Picture…
U.S. Department of State Background Note Index: People History Government and Political Conditions Economy Defense Foreign Relations U.S.-C.A.R. Relations PEOPLEThere are more than 80 ethnic…
U.S. Department of State Background Note Index: Geography History Political Conditions Defense U.S.-Equatorial Guinea Relations GEOGRAPHYThe majority of the Equatoguinean people are of Bantu…
(Encyclopedia) energy, sources of, origins of the power used for transportation, for heat and light in dwelling and working areas, and for the manufacture of goods of all kinds, among other…
U.S. Department of State Background Note Index: People History Government and Political Conditions Economy Foreign Relations U.S.-Ukrainian Relations PEOPLEThe population of Ukraine is about…
