What contributed to establishing Istanbul as an important commercial center?

Istanbul's strategic geographic location, bridging Europe and Asia, has historically made it a vital trade hub. The city's control over key maritime routes, particularly the Bosporus Strait, facilitated trade between various regions. Additionally, its rich cultural diversity and historical significance, particularly during the Byzantine and Ottoman Empires, attracted merchants and travelers from across the globe, further solidifying its status as a major commercial center. The establishment of marketplaces and trade networks also contributed to its economic prominence.