Answer: Article V of US constitution
Explanation: it gives states the power to call a convention of states to propose amendments. It takes 34 states to call for the convention and 38 to ratify any amendment that was proposed.
What I can infer from what Lewis and Clark saw when moving west from the Mississippi river is that the landscape along the river changed drasticallly. The forest receded, replaced first by the high prairie and then the shorter grass of the high plains. The temperatures became colder and as they continued their expedition by the river they realized that there was no water route to the pacific ocean, just more mountains.
I would think it is "In some regions, African Americans were required to
pass the same test as white citizens before they could vote." Because
the very badly written sign says that if a African american had an
education that he could vote with the whites.
