Portugal's empire was extensive, and the country thrived on: corn from the new world trade the adventures of exploration being rejected by foreign countries

The correct option is: trade.

Explanation

Portugal's empire was extensive, and the country mostly thrived on trade. In fact, they had a big commercial network with other countries.

Moreover, their main source of trade income was Brazil, since they exported diamonds, slaves and other goods too.

the right choice would be a. culture within the city-state. c. loyalty to the police. d separation by land and sea.

what are local authorities doing to fix the problem

explanation:

what are local authorities doing to fix the problem