Answer:
God was on the side of American expansion
Explanation:
The idea of Manifest Destiny was that God had destined the Americans to govern North America. One of its belief was that US was destined to spread from one coast to the other.
Can you elaborate? What about human energy? Harnessing it how?
Answer:
Pythagoras
Explanation:
Pythagoras was a Greek mathematician and philosopher who came up with the pythagorean theorem which is about right angle trianges:a²+b²=c²