<prompt> Translate the following text to EnglishAkko iliangukia Mamluk wa Misri watumwa waliowekwa huru wa asili ya Kituruki na Circassian mnamo 1291 na kuanzisha kipindi cha Msalaba.  <response>: Akko fell to the Egyptian Mamelukes freed slaves of TurkishCircassian origin in 1291, bringing to an end the Crusader period. 