The lands north of the Hindu Kush, in the Hephthalite dominion, Buddhism was the predominant religion by mid 1st millennium CE. These Buddhists were religiously tolerant and they co-existed with followers of Zoroastrianism, Manichaseism, and Nestorian Christianity. This Central Asia region along the Hindu Kush was taken over by Western Turks and Arabs by the eighth century, facing wars with mostly Iranians. One major exception was the period in the mid to late seventh century, when the Tang dynasty from China destroyed the Northern Turks and extended its rule all the way to the Oxus River valley and regions of Central Asia bordering all along the Hindu Kush.