What is the concept of Manifest Destiny? How did Britain and Mexico likely feel about this concept?

Manifest Destiny, a phrase coined in 1845, is the idea that the United States is destined—by God, its advocates believed—to expand its dominion and spread democracy and capitalism across the entire North American continent

idk about How did Britain and Mexico likely feel about this concept? sorry

the answer for 3 is b and the answer for 4 is d