Analysis of information sources in references of the Wikipedia article "Safavid dynasty" in English language version.
After 907/1502, Adharbayjan became the chief bulwark and rallying ground of the Safawids, themselves natives of Ardabil and originally speaking the local Iranian dialect
After 907/1502, Adharbayjan became the chief bulwark and rallying ground of the Safawids, themselves natives of Ardabil and originally speaking the local Iranian dialect