Flag of the Omani Empire (1698–1856), Tanzania Sticker

The Omani Empire (Arabic: الْإِمْبَرَاطُورِيَّة الْعُمَانِيَّة) was a maritime empire, vying with Portugal and Britain for trade and influence in the Persian Gulf and Indian Ocean. After rising as a regional power in the 18th century, the empire at its peak in the 19th century saw its influence or control extend across the Strait of Hormuz to modern-day Iran and Pakistan, and as far south as Cape Delgado in what is now Mozambique. After the death of Said bin Sultan in 1856 the empire was divided between his sons into two sultanates, an African section (Sultanate of Zanzibar) ruled by Majid bin Said and an Asian section (Sultanate of Muscat and Oman) ruled by Thuwaini bin Said.