How did the united states act on the idea of manifest destiny?

Manifest Destiny held that the United States was destined—by God, its advocates believed—to expand its dominion and spread democracy and capitalism across the entire North American continent. Manifest Destiny, a phrase coined in 1845, expressed the philosophy that drove 19th-century U.S. territorial expansion.

b.

jim crow laws were enacted in northern states.

i believe the answer to your question is b. pay your bills early