Final answer:
B. Nations focused on naval power to protect their interests in global trade.
Step-by-step explanation:
The relationship between increased global trade and interactions between nations, as described in the excerpt, is that nations focused on naval power to protect their interests in global trade (option B). The relationship between increased global trade and interactions between nations was that nations focused on naval power to protect their interests in global trade.
The governor of Portugal's colonies in India emphasizes the importance of being powerful at sea in order to prevent adverse circumstances and to discover new enemies. He states that holding India as a trading post depends on being powerful at sea.