Answer:
At the time of the fall of Constantinople to the Ottomans, the trade route through the Middle East to China and India was closed for the Christian European nations. Due to this situation, all the European powers, especially Spain and Portugal, began to look for alternative routes through which to access these markets.
In the case of the Portuguese, they began their exploration to the east, surrounding the African continent to reach the Indian Ocean through it. Thus, they began to establish colonies along their routes, both in Africa (Angola, Cape Verde, etc.) and in Asia (Goa, Macao, etc.). In this way, through the establishment of commercial posts, the Portuguese began to dominate these routes territorially, charging passage fees and establishing fixed posts in which they developed trade with the nations of the region.
The Portuguese transferred and dominated the maritime trade system of the Indian ocean before they took force.
They took over the trading cities and destroyed the Muslim trade ships. As they were good at shipbuilding they traded with many nations and took control of the commerce of the Indian ocean. Their trade was made easier by the monsoon-laden winds. Due to they capture several lands they explored eastern and western parts of the African continent and gathered a large number of resources.Learn more about the which the Portuguese transformed.
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