Supreme Court is the highest court in USA
sentence 3 should be revised.
Answer:
As a commodity, cotton had the advantage of being easily stored and transported. ... Southern cotton, picked and processed by American slaves, helped fuel the nineteenth-century Industrial Revolution in both the United States and Great Britain.
Explanation:i dont know if this is what you needed but this is why it started
One real life example of the separation of powers in the US government would be that the President of the United States has the power to veto legislation passed by the Legislature.