September 11, 2001 was marked as a somber day for the United States and for civilized society around the world. The World Trade Center (Twin Towers) were symbols of economic power in the whole world. Consequently it impacted many people's and companie's financial situation. The destruction of thos...

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...