Whch of the following best describes problems faced by union pacific workers

they came into conflict with native americans
the mountains were difficult to cross
it was hard to get the buffalo to move out of the way
the lakota were poor workers

Hich explains why the constitution gave congress the power to create a system of federal courts? the constitution wanted congress to share power with the judicial branch. the constitution anticipated the need for courts lower than the supreme court. the constitution wanted congress to share power with the appellate courts. the constitution anticipated the need for courts equal to the supreme court.