Original: Years : 1274 1275 1276 1277 1278 1279 1280 Decades : 1240s 1250s 1260s 1270s 1280s 1290s 1300s Centuries : 12th century 13th century 14th century Events Battle of Ngasaunggyan : Burma 's Pagan Empire begins to disintegrate after being defeated by Kublai Khan at Yunnan near the Chinese border .
Simplified: Events Burma 's Pagan empire begins to disintegrate after being defeated by Kublai Khan at the Battle of Ngasaunggyan , at Yunnan near the Chinese border .