Final answer:
Manifest Destiny justified Americans' right and duty to govern any other group through westward expansion.
Step-by-step explanation:
Manifest Destiny justified in Americans' minds their right and duty to govern any other group. It was a belief that the United States was destined to expand its territory across the continent, from the Atlantic to the Pacific Ocean. This belief led to westward expansion and the acquisition of new territories, often disregarding the rights of Native Americans and other groups. It did not limit westward expansion, nor did it give greater rights to Native Americans. It also did not directly justify the American Revolution, which happened before the concept of Manifest Destiny emerged.
Learn more about Manifest Destiny