It was the landmark case "Marbury vs. Madison" that allowed the Supreme Court to claim the power of judicial review (the authority to declare a law unconstitutional), since this now acts as one of the major "checks" the court has on the legislative branch.
Common sense is significant because it convinced colonists that the United States should be independent from Great Britain! :)
During this era, human technology boomed. In this era, nomads have started farming. Nomads have stopped moving from one place to another. They have started forging metal tools. They also started pastoralism. They have communities and tribe. They were able to create a system on their own.
The answer is A. They were planning on using the slaves to dig for them
