John C. Frémont

John C. Frémont was an American explorer, politician, and military officer in the 19th century. Known as "The Pathfinder," he gained fame for his expeditions in the western United States, mapping territories and promoting westward expansion. Frémont was a key figure in the California Gold Rush and played a role in the U.S. annexation of California. He later became the first presidential candidate of the Republican Party in 1856, advocating against the spread of slavery. His life reflects the complexities of American expansionism and the tumultuous politics of his time.