Why did Emperor Charles V support the conquest in America, although at that time the Ottoman Turks besieged Vienna

Why did Emperor Charles V support the conquest in America, although at that time the Ottoman Turks besieged Vienna, captured Egypt and the northern coast of Africa?

The conquista in America was a very cheap and profitable “enterprise”, since the forces of the Indian states were incomparable with the forces of the Ottoman Turks, and the conquistadors equipped expeditions at their own expense, deducting a fifth of the income to their king.

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