Review the map above. Why is the black line significant in American history? It represents the northern boundary line for territory claimed by Mexico.
It represents the main route for settlers moving into the Oregon Territory.
It represents the northern boundary line for the territory claimed by the United States.
It represents the path of the Transcontinental Railroad, a major trade route in the United States.

B. It represents the main route for settlers moving into the Oregon Territory.

Explanation:

i believe that B is your best answer, as it looks like it is showing the Oregon trail, which led from Independence to Oregon.

hope this helps

It represents the maine route for settlers moving into the Oregon Territory, this map is part of the Westward Expansion(Manifest Destiny) topic!

Explanation:

reread your text and you will find the answer. stay focused ignore all your distractions.

explanation:

the first action that caused many creek indians to turn against william mcintosh was when mcintosh a) supported the united states during the creek war of 1813–1814. b) attempted to stop the sale of creek land to the u.s. government. c) seized control of over 1,000 acres of land belonging to the creeks.