There were numerous rivers flowing into either the Tigris or the Persian Gulf.
The Persian Gulf has figured in history from the earliest times.
It has two important branches - at the south-west the Gulf of Aden, connecting with the Red Sea through the strait of Bab-elMandeb; and at the north-west the Gulf of Oman, connecting with the Persian Gulf.
Thence he visited the African coast, touching at Mombasa and Quiloa, and then sailed across to Ormuz and the Persian Gulf.
The Ethiopian Subregion comprises the whole of Africa and Madagascar, except the Barbary States, but including Arabia; in the north-east the subregion melts into the Palaearctic between Palestine and the Persian Gulf.
