CLEP US History I

Answer: B - The idea of Manifest Destiny fostered Westward expansion. Under this concept, the United States was destined to grow, and each success provided justification for the next. Beginning in the 1830, the vision of an American that went from sea to shining sea took hold of the popular imagination. This became one of the guiding principles of the American domestic policy in the 19th century and supported the imperialism that would characterize the early 20th century.