In an effort to relieve the caseload burden in the Supreme Court and to handle a dramatic increase in federal filings, Congress, in the Judiciary Act of 1891, established nine courts of appeals, one for each judicial circuit.
Justinian I was an emperor well known for establishing a long lasting rule of law with the help of his wife.
B. Converting Native Americans to Christianity.
The best answer in regards to the specific question appears to be A: Many small towns boomed as people came to drill wells.