What body of water lies between the arabian peninsula & modern iran?
Persian Gulf The Persian Gulf lies between the Arabian Peninsula and Iran. It is an arm of the Arabian Sea, which is a branch of the Indian Ocean. The Gulf is approximately 200 miles wide, is very shallow, and contains many islands. In ancient times, the Persian Gulf was an important transportation route, but most transport declined with the fall of Mesopotamia in the fourth century B.C.E.
