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First Ottoman period

In 1517, the first Ottoman period began with Selim I 's conquest of Mamluk Egypt. This added Medina to their territory and they continued the tradition of showering Medina with money and aid. In 1532, Suleiman the Magnificent built a secure fortress around the city and constructed a strong castle armed by an Ottoman battalion to protect the city. This is also the period in which many of the Prophet's Mosque 's modern features were built even though it was not painted green yet. These suburbs also had walls and gates. The Ottoman sultans took a keen interest in the Prophet's Mosque and redesigned it over and over to suit their preferences.