Why was it necessary for Venice to get permission to trade in Egypt and Babylon?

Venice sought permission to trade in Egypt and Babylon primarily to secure its economic interests and expand its commercial influence in the Mediterranean and beyond. By obtaining official approval from local rulers, Venice aimed to ensure the safety of its merchants and the uninterrupted flow of goods, such as spices and textiles, which were crucial for its thriving economy. Additionally, this diplomatic approach helped Venice navigate complex political landscapes and fostered alliances that bolstered its trading power in the region.