Answer:
C) United States expansion was acceptable so long as it stayed out of Mexico and Canada.
Explanation:
The ideology of the Manifest of destiny belonged to the mid-nineteenth century American belief that the United States is destined by the Almighty to spread the ideas of democracy and capitalism to the entire continent. This was used as justification for the forced removal of native Indians but it also created sectional differences over the issue of slavery. The territorial settlement with Canada and Mexico sidelined these countries fro the above-mentioned ideology.
16+5 =21. M is 16 if you do 21-5=16
Answer: I'm not entirely sure, but I know it helped them want to establish a democracy where the people chose their leaders.