Sistan
Sīstān (Persian: سیستان) is a border region in eastern Iran (Sistan and Baluchestan Province) and southern Afghanistan (Nimroz, Kandahar and Zabul provinces).
Sistan was once the homeland of Sakas, a Scythian tribe of Iranic origin. The Saffarids, one of the early Iranian dynasties of the Islamic era, were first from Sistan.