When he saw people falling, it made him think about the forces of nature and it lead him to his studies.
The correct answer is inferior courts.
The US Constitution gives Congress the ability to create inferior courts as a means to provide federal rulings on issues between different states without having to go through the Supreme Court. Considering the size of the nation, lower federal courts are needed in order to effectively addresss all of the legal problems within the United States. Just having the Supreme Court would be extremely ineffective, as they can only hear so many cases in a year.
a
a. The shogunate asserted military control when called to put down a peasant revolt.