Why it's the capital
Muharraq, on the neighbouring island, was the capital of Bahrain until 1923, while Manama grew into the main centre of trade. When Bahrain became independent in 1971, the new state named Manama its capital.
Capital of BahrainManama lies on the northeastern coast of Bahrain Island, the main island of Bahrain, in the Persian Gulf between Qatar and the coast of Saudi Arabia.
Muharraq, on the neighbouring island, was the capital of Bahrain until 1923, while Manama grew into the main centre of trade. When Bahrain became independent in 1971, the new state named Manama its capital.
Bahrain is a small island country off the coast of Saudi Arabia, north-west of the Qatar peninsula. Manama is on the island's northeast corner.
Sources: Wikipedia: Manama, Wikipedia: Bahrain