In 1962, Cuban leaders became convinced that the United States was planning an attack on Cuba. Cuban leaders asked the U.S.S.R. for more military aid. The U.S.S.R. responded by sending missiles and materials to build launch sites. In October of that year, U.S. intelligence produced evide...

GIS Geographical Information System originated in the 1960s. During the early days of the technology the use was limited to a small group of practicioners. It is a information technology which analizes, stores, and displays both spatial and non-spatial data. It is used in many different specializati...