William Gilpin

William Gilpin was a 19th-century US explorer, politician, land speculator, and futurist writer about the American West. He served as military officer in the United States Army during several wars, accompanied John C. Frémont on his second expedition through the West, and was instrumental in the formation of the government of the Oregon Territory. As a politician and writer, he was an inveterate believer in Manifest Destiny and was a visionary booster of new settlement to the West, helping lay the groundwork in his writings for a modern theory of the succession of civilizations.