What qualities or characteristics made the Ottoman Empire influential across Europe?

In its times of splendor, the Ottoman empire was feared in Europe, seeing it as a major threat. The Ottoman empire expanded into Europe and incorporated territories in southeastern Europe and in the Balkans. It attempted to conquer Vienna. For centuries, it was one of the great powers of the world. It enjoyed military might, a vast territory and large populations, vast resources, and a unified political-administrative system.