In the early 1800s why did large numbers of immigrants move to the western frontier

Gold rush

Explanation: in 1848 james w. Marshall found gold at sutters mill in coloma, California The news of gold brought approx 300,000 people to California(aka Western frontier) from The rest of the United States and abroad. Including immigrants

federal appellate courts are called courts of appeals. cases can be further appealed to the u.s. supreme court. cases are heard for the first time in a trial court. if either party disagrees with the decision in the trial court, they can appeal, asking a higher court to review the decision.