Explored by Columbus in 1502 and by Balboa in 1513, Panama was the principal shipping point to and from South and Central America in colonial days. In 1821, when Central America revolted against Spain, Panama joined Colombia, which had already declared its independence. For the next 82 years, Panama attempted unsuccessfully to break away from Colombia. Between 1850 and 1900 Panama had 40 administrations, 50 riots, 5 attempted secessions, and 13 U.S. interventions. After a U.S. proposal for canal rights over the narrow isthmus was rejected by Colombia, Panama proclaimed its independence with U.S. backing in 1903.There president is Martín Torrijos Herrera

info from: http://www.infoplease.com/ipa/A0107870.html