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What was the Arabian Sea called during Roman times?

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Map showing the Arabian Sea and Bay of Bengal, highlighting physical features such as ocean basins, ridges, and trenches. Surrounding countries including India, Pakistan, Bangladesh, Sri Lanka, and parts of the Middle East and Southeast Asia are labeled with major cities and boundaries. Ocean depths are indicated with shading and spot depth values.
Arabian Sea

During Roman times, the Arabian Sea was known as the Mare Erythraeum (Erythraean Sea). In ancient geography, this term was used more broadly to encompass the Arabian Sea, the Red Sea, and the Persian Gulf.12