The U.S. Armed Forces has used the Social Security number as an identification number for the Army and Air Force since July 1, 1969, the Navy and Marine Corps since January 1, 1972, and the Coast Guard since October 1, 1974. Previously, the United States military used a much more complicated system of service numbers.
| Share | Cite. Cameroon (kÄmËÉrÅnË) [ key ], Fr. Cameroun, officially Republic of Cameroon, republic (2005 est. pop. 16,380,000), 183,568 sq mi (475,442 sq km), W central Africa.
The Gateway Arch, or âGateway to the West,â is the principal component of the Jefferson National Expansion Memorial, an extraordinary monument built on the west bank of the Mississippi River in St. Louis, Missouri, âthe oldest European city in the Midwest.â The Gateway Arch is the tallest man-made monument in the United States (630 feet, or 192 ...