Al-Khwarizmi was Persian-born but based in Baghdad. In fact, the Abbasid dynasty had Persian lineages and a large percentage of people with Persian origins lived in Baghdad and adjoining areas at the time. Another Muslim polymath with Persian origin of the time was Rhazes or al-Razi who produced an encyclopedia of medicine.
Al-Khwarizmi was Persian-born but based in Baghdad. In fact, the Abbasid dynasty had Persian lineages and a large percentage of people with Persian origins lived in Baghdad and adjoining areas at the time. Another Muslim polymath with Persian origin of the time was Rhazes or al-Razi who produced an encyclopedia of medicine.
Please check out this link for an impartial study by a UN panel of experts:
http://www.un.org/ga/search/view_doc.asp?symbol=S/2017/81