The first Mongol invasions of Burma ( present-day Myanmar ) ( ) were a series of military conflicts Hostile_encounter between Kublai Khan 's Yuan dynasty , division of the Mongol Empire , and the Pagan Empire that took place Process_start between 1277 and 1287 .

The invasions toppled Change_of_leadership the 250-year-old Pagan Empire , and the Mongol army seized Pagan territories in present-day Dehong , Yunnan and northern Burma to Tagaung .

The invasions toppled Change_of_leadership the 250-year-old Pagan Empire , and the Mongol army seized Pagan territories in present-day Dehong , Yunnan and northern Burma to Tagaung .

The Mongols first demanded Request tribute from Pagan in 1271–72 , as part of their drive Motion to encircle the Song dynasty of China .

In 1275 , the emperor ordered Arranging the Yunnan government to secure Preventing_or_letting the borderlands in order to block an escape Escaping path for the Song , and permitted Preventing_or_letting a limited Limiting border war if Pagan contested Quarreling .

Pagan did contest Competition but its army was driven Motion back at the frontier by the Mongol Army in 1277–78 .

After a brief lull , Kublai Khan in 1281 turned Motion his attention to Southeast Asia , demanding Request tribute from Pagan , the Khmer Empire , Đại Việt and Champa .

The Burmese embassy , received Receiving by the emperor in Beijing in January 1287 , agreed Agree_or_refuse_to_act to a treaty that acknowledged Statement the suzerainty of the Yuan dynasty or the Mongol Empire over the Pagan Empire and annual payments in taxes to the Yunnan government in exchange Exchange for the evacuation of Mongol troops from northern Burma .

They may not have reached Arriving Pagan , and even if they did , after having suffered Bodily_harm heavy casualties , they returned Arriving to Tagaung .

The Pagan Empire disintegrated and anarchy ensued Process_start .

In March 1297 , they accepted Receiving the voluntary submission of King Kyawswa of Pagan although he controlled Control little beyond the capital city of Pagan ( Bagan ) .

In March 1297 , they accepted Receiving the voluntary submission of King Kyawswa of Pagan although he controlled Control little beyond the capital city of Pagan ( Bagan ) .