HELP!! What state system controlled the Indian ocean exchange? and how did they exercise their power???

What state system controlled the Indian ocean exchange. Answer-Portuguese government. how did they exercise their power. Answer-They sent more ships to the eastern coast of Africa with three goals: to take anything of value they could find, to force the kings of the city to pay taxes to Portuguese tax collectors, and to gain control over the entire Indian Ocean trade.

Explanation:

it would have to be gasioline

answer; i believe its (cpr);