Which term describes the belief that the United States should expand across the continent from Atlantic to Pacific?

• A. Manifest Destiny
• B. National Markets
• C. Nationalism
• D. Mobilization

Answer: (A)

Manifest Destiny is the belief that the United States was destined to expand from the Atlantic to the Pacific. This idea framed westward expansion as both inevitable and justified, guiding people and policymakers to push beyond existing borders in hopes of spreading American institutions and democracy. It helps explain why so much energy and political action of the era focused on acquiring new lands, negotiating with, or overcoming rivals, and settling vast territories—from Texas to Oregon and California—leading toward a continental United States. Other terms describe different concepts, like broad economic integration (national markets), patriotic feeling (nationalism), or organizing resources for large actions (mobilization), but they don’t capture the specific conviction that expansion across the continent was America’s destined path.