The Arabian Sultanate is a region in the Middle East and South Asia that is made up of four countries: OMAN (4 letters), Omani (5 letters), SWAT (4 letters), and BRUNEI (6 letters). OMAN is a country located on the southeastern coast of the Arabian Peninsula, while Omani is an adjective used to describe something related to OMAN. SWAT is a valley and former princely state in northern Pakistan, and BRUNEI is a small nation located on the island of Borneo in Southeast Asia.