Why did most americans think the united states should extend to the pacific ocean?

they feared invasion by mexico.

they had already settled the lands of the great plains and needed more room.

they wanted to make sure great britain did not claim the land.

they believed it was their right to possess this land.

they believed it was their right to possess this land is the correct answer.

Explanation:

The idea that god has given the right to take over every part of North America to US is known as Manifest Destiny. The term was coined by Newspaper writer John O'Sullivan in 1845. According to Manifest Destiny the Americans were given a special job to grow bigger and open the borders of freedom to more people. It was due to this idea that Americans kept expanding toward the western frontier until the western frontier was declared to be closed in 1893 by superintendent of the Census.

in february 1787, congress decided that a convention should be convened to revise the articles of confederation, the nation’s first constitution. in may, 55 delegates came to philadelphia, and the constitutional convention began. debates erupted over representation in congress, over slavery, and over the new executive branch. the debates continued through four hot and muggy months. but eventually the delegates reached compromises, and on september 17, they produced the u.s. constitution, replacing the articles with the governing document that has functioned effectively for more than 200 years.

evaluate the extent to which the seven years' war (french and indian war, 1754–1763) marked a turning point in american relations with great britain, analyzing what changed and what stayed the same from the period before the war to the period after it.