sentences:  The arrival of Islam removed the royal patronage to the monastic tradition of Buddhism, and the replacement of Buddhists in long-distance trade by the Muslims eroded the related sources of patronage.In the Gangetic plains, Orissa, northeast and the southern regions of India, Buddhism survived through the early centuries of the 2nd millennium CE.The Islamic invasion plundered wealth and destroyed Buddhist images, and consequent take over of land holdings of Buddhist monasteries removed one source of necessary support for the Buddhists, while the economic upheaval and new taxes on laity sapped the laity support of Buddhist monks.