Walking. Prehistoric humans came over on a land bridge between Russia and Alaska and worked their way down into south America.
It didn't leave it stronger but built it to become better than what it was, it started to build amendments for all people but it started the industrial revolution in u.s
Answer:
The Constitution provides that an amendment may be proposed either by the Congress with a two-thirds majority vote in both the House of Representatives and the Senate or by a constitutional convention called for by two-thirds of the State legislatures.
Explanation:
A) gaining an education
B) the good will of elites
C) their political power
