Asignificant outcome of the portuguese arrival in west africa was:
a. an expansion of africa's internal slave trade.
b. a decline of portuguese interest in finding a sea route to asia.
c. the abolition of slavery along the west coast of africa.
d. large-scale immigration from west africa to western europe.

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.