Final answer:
The Ming Dynasty used its navy to establish trade routes, expand influence, and project power. The navy was sent to ports in the Pacific and Indian Oceans to establish trade relationships and showcase Chinese naval power.
Step-by-step explanation:
The Ming Dynasty used its navy to establish trade routes, expand Chinese influence, and project power in the Indian and Pacific Oceans. The navy was sent to ports in these oceans to establish trade relationships, extend the tributary system, and showcase Chinese naval power. By sending the navy to foreign port cities, the Ming Dynasty hoped to convey the message of China's economic and military superiority.