Answer:
Fifteenth Amendment "commands that the right to vote shall not be denied or abridged on account of race or color, and it gives Congress the power to enforce that command. The Amendment is not designed to punish for the past; its purpose is to ensure a better future."
The doctrine that allowed people living in the territories to decide the issue of slavery through their governmental bodies was called popular sovereignty.
The dispute between north and south over slavery spreading to the new western territory/Louisiana purchase
Russia maintained successful relations with long-time allies, and struggled to modernize
i think the answer is the third one or C.
