 At any rate, all scholars accept that during the 11th century, Pagan consolidated its hold of Upper Burma, and established its authority over Lower Burma.The emergence of Pagan Empire would have a lasting impact on Burmese history as well as the history of mainland Southeast Asia.The conquest of Lower Burma checked the Khmer Empire's encroachment into the Tenasserim coast, secured control of the peninsular ports, which were transit points between the Indian Ocean and China, and facilitated growing cultural exchange with the external world