The Portuguese Dominance of Trade Was Dependent on Their Ability

The Portuguese dominance of trade was dependent on their ability to

A) force the native populations to convert to Christianity.
B) form alliances with Chinese princes to take advantage of the large Chinese navy.
C) force merchant ships to call at fortified trading sites and pay duties.
D) conquer territories and bring them permanently into their growing empire.
E) take advantage of their huge population to overwhelm their adversaries.