Each state could have 2-7 representatives, but the state had only one vote
B,C,E
The Oregon Trail led pioneers to rich farmlands, where they settled.
The California Trail split off from the Oregon Trail at the Rocky Mountains.
The California Trail attracted mainly pioneers seeking gold, especially after 1848.
Bomb shelters and refugee centres, I think
The answer is: C. On appeal from a lower court via a writ of certiorari
A writ of certiorari is a type of petition of judicial review in the United States that is more commonly seen when a party fills a petition for a case that has been decided by one of the United States courts of appeals in order to be reviewed by SCOTUS in case of legal error.