Which body of water does NOT border the Arabian Peninsula?

The Arabian Peninsula[1] (/əˈreɪbiən ... /; Arabic: شِبْهُ الْجَزِيرَةِ الْعَرَبِيَّة‎, shibhu l-jazīrati l-ʿarabiyyah, "Arabian Peninsula" or جَزِيرَةُ الْعَرَب, jazīratu l-ʿarab, "Island of the Arabs")[2] is a peninsula of Western Asia, situated northeast of Africa on the Arabian Plate. The Peninsula, plus Bahrain, the Socotra Archipelago and other nearby islands form a geopolitical region called Arabia, which is the largest region in the world without any river.[3]

Explanation:Before the modern era, it was divided into four distinct regions: Red Sea Coast (Tihamah), Central Plateau (Al-Yamama), Indian Ocean Coast (Hadhramaut) and Persian Gulf Coast (Al-Bahrain). Hejaz and Najd make up most of Saudi Arabia. Southern Arabia consists of Yemen and some parts of Saudi Arabia (Najran, Jizan, Asir) and Oman (Dhofar). Eastern Arabia consists of the entire coastal strip of the Persian Gulf.

explanation:

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the roman army grew in size and became dominant in the mediterranean region.