Where was portuguese trading focused in the fifteenth and sixteenth centuries?

The high technology in the ships of the Portuguese gave them an advantage over other countries, becoming the most powerful navigators during those two centuries. Portuguese trading focused mainly on obtaining gold, ivory, and pepper; but in addition to these products, so prized in Europe, it is estimated that more than 175,000 slaves were also carried on Portuguese ships to Europe and the Americas in the greatest migration of people during the fifteenth and sixteenth centuries.