Which policy example best illustrates Manifest Destiny in the 19th century?

Which policy example best illustrates Manifest Destiny in the 19th century?

• A. It linked westward territorial expansion through acquisitions like Texas, Oregon, and the Mexican Cession, driven by nationalist belief
• B. A policy of isolating the U.S. from foreign entanglements
• C. A belief in maintaining the status quo on borders
• D. A plan to industrialize the Northeast exclusively

Answer: (A)