In 224 CE Zoroastrianism was made the official religion of Persia, and other religions were not tolerated, thus halting the spread of Buddhism westwards. In the 3rd century the Sassanids overran the Bactrian region, overthrowing Kushan rule , where buddhists were persecutedwith many of their stupas fired. During the second half of the third century, the Zoroastrian high priest Kirder dominated the religious policy of the state. He ordered the destruction of several Buddhist monasteries in Afghanistan, since the amalgam of Buddhism and Zoroastrianism manifested in the form of a "Buddha-Mazda" deity appeared to him as heresy Sources : Yarshater, Esham, ed. (1983). The Seleucid, Parthian and Sasanian Periods. The Cambridge History of Iran. 3. Cambridge University Press Alexander Berzin, History of Buddhism in Afghanistan https://cdn.discordapp.com/attachments/908506026486136852/911077725438103612/RPReplay_Final1618778485.mov https://www.iranicaonline.org/articles/marriage-next-of-kin Welcome to Encyclopaedia Iranica The Encyclopaedia Iranica is a comprehensive research tool dedicated to the study of Iranian civilization in the Middle East, the Caucasus, Central Asia, and the Indian subcontinent Polytheism and corruption from Zoroaster’s original teaching. https://media.discordapp.net/attachments/826268416876740648/1006532159793799258/IMG_0366.png?width=203&height=405 Incest in zoroastrianism. https://media.discordapp.net/attachments/826268416876740648/1006533940334559282/IMG_0367.png?width=784&height=406 https://media.discordapp.net/attachments/826268416876740648/1006533947217424424/IMG_0368.png?width=509&height=406 https://media.discordapp.net/attachments/826268416876740648/1006533951973752873/IMG_0369.png?width=874&height=406