An arm of the Arabian Sea between the Arabian Peninsula and southwest Iran. It has been an important trade route since ancient times and gained added strategic significance after the discovery of oil in the Gulf States in the 1930s.
Arm of the Arabian Sea, between SW Iran & Arabia: c. 88,800 sq mi (229,991 sq km)
He had determined that the Indus fleet should be used to explore this new world and try to find a waterway between the Indus and the Persian Gulf.
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.
Until then the Venetians held the carrying trade of India, which was brought by the Persian Gulf and Red sea into Syria and Egypt, the Venetians receiving the products of the East at Alexandria and Beirut and distributing them over Europe.