Answer :
The correct answer is the following:
The Ottomans lost income because overland trade through the Middle East declined.
This in fact was also the objective of da Gama's and others' interest in a direct rout to India (not the decline of trade of the Ottomans, but the fact that they would not have to pay high prices to the Ottomans anymore).
The Ottomans lost income because overland trade through the Middle East declined.
This in fact was also the objective of da Gama's and others' interest in a direct rout to India (not the decline of trade of the Ottomans, but the fact that they would not have to pay high prices to the Ottomans anymore).