Kushanshahr was a province of the Sasanian Empire comprising the region between Kabul Valley and Peshawar Valley. The Kushanshar territory centered on Tukharistan, and covered the area from Tirmidh to Peshawar.
Kushanshahr was a province of the Sasanian Empire situated in the region between the Kabul and Peshawar valleys. Its central area was Tukharistan, encompassing the areas from Tirmidh to Peshawar.