Colombia, which has coasts on both the Pacific Ocean and the Caribbean Sea, has been a strategically important region for more than 500 years. Today, the Republic of Colombia is the fourth-largest country in South America by area, and second-largest by population. At one time, Colombia's economy was highly dependent on agriculture, but today the country is fully modernized and has industrial centers in Bogot?, Medell?n, Cali, Barranquilla, and other...