Which Omani Sultan moved the capital from Muscat to Zanzibar in the 19th century?

The Omani Sultan who moved the capital from Muscat to Zanzibar in the 19th century was Sa'id bin Sultan.

Here's a simple explanation:

Sa'id bin Sultan was an influential sultan of Oman in the 19th century. During his reign, he expanded Omani influence along the East African coast, including the region of Zanzibar. Recognizing Zanzibar's strategic importance and its lucrative trade opportunities, especially in spices and slaves, he decided to shift the capital from Muscat to Zanzibar. This move allowed the Sultanate to exert greater control over trade routes and expand its influence in Eastern Africa. As a result, Zanzibar prospered under his rule, becoming a significant center of trade and culture.