What happened on this land around c. 600–700 CE (Arabic Conquest)?

Rapid Arab conquests; collapse of Sasanian imperial structure
Rulers
Late Sasanian rulers
until 651 CE
Sasanian dynasty persists but collapses under Arab-Muslim conquests.
early Umayyad Caliphates
c. 633–750 CE
Battles
Battle of Nahavand
642 CE (Nov)
Decisive Arab victory often called 'Victory of Victories' — significant step in Sasanian collapse and Islamic control of Persia.