Nicaragua By Kwellman Period: Jan 1, 1502 to Jan 1, 1502 Christopher Columbus He was the first European to visit the coast of central amiraca. Period: Jan 1, 1856 to Dec 1, 1857 William Walker During the civil war and seizes control of Nicaragua William Walkers declares himself president. Period: Jan 1, 1934 to Dec 1, 1934 General Anastasio Somoza He ordered Sandino to be killed.