Taking the entire globe, if North America and Western Europe can be called the 'cities of the world', then Asia, Africa and Latin America constitute 'the rural areas of the world'.
Bio: Muḥammad ibn Mūsā al-Khwārizmī, formerly Latinized as Algoritmi, was a Persian mathematician, astronomer and geographer during the Abbasid Caliphate, a scholar in the House of Wisdom in Baghdad.
