Passage: After the end of Forty Years' War in 1424, Ava gave up its dream of rebuilding the Pagan Empire. Instead, for the next six decades, it would struggle to hold on to its vassal states. Rebellions arose every time a new king came to power. The new king would have to reestablish his power all over again by gaining the fealty of all the vassal states, usually by show of force. Of these, the remote vassal state of Toungoo , tucked away in the southeastern corner across the Pegu Yoma range, proved most troublesome to successive kings at Ava. Toungoo lords rebelled against Ava in 1426-1440, 1451-1459 and 1468-1470, usually with Pegu's implicit or explicit support. Ava also faced rebellions at Mohnyin  and Prome . The beginning of the end of Ava came in 1480. The new king Minkhaung II was greeted with a multitude of rebellions but it proved to be different this time. The most serious rebellion was by his younger brother, lord of Yamethin. With a serious rebellion so close to Ava, vassal states broke away one by one. The Yamethin rebellion went on until 1500. In 1482, Minkhaung's uncle at Prome successfully revolted, the Prome Kingdom sprang into existence. Ava's vassal Shan states of Mohnyin, Mogaung, Momeik and Kale also broke away in the 1490s. Surprisingly, Ava's steadfast ally during this period was the usually restive vassal of Toungoo which remained loyal to Ava until Minkhaung's death in 1501.
For how many years did Toungoo lords rebel against Ava? How many of Ava's vassal Shan states broke away in the 1490s? How many periods of time did the Toungoo lords rebell against Ava? How many rebellions did Toungoo have against Ava? How many times did Ava experience rebellion from Toungoo lords? How many times did Toungoo rebel against Ava? How many vassal Shan states did Ava lose in the 1490s? How many vassal states rebelled against Ava? How many years did the Yamethin rebellion last? How many years was it between Minkhaung's death and the end of the Forty Years' War? How many years was it between Minkhaung's death and when Minkhuang's uncle revolted? How many years was the first time period the Toungoo lords rebelled against Ava? How many years was the longest Toungoo rebellion? How many years was the second time period the Toungoo lords rebelled against Ava? How many years was the third time period the Toungoo lords rebelled against Ava? Prome Kingdom sprang into what? Prome Kingdom sprang into? The most serious rebellion was by who? What relatives of Minkhaung II fought against him? What state helped to foment Tougoo rebellion? What year did the Forty Years' War begin? Which happened first, the end of the Forty Years' War or the rebellion of the vassal states? Which period of rebellion against Ava lasted longer, 1451-1459 or 1468-1470? Which period of rebellion only lasted two years? Which period was the longest time of rebellion against Ava, 1426-1440, 1451-1459 or 1468-1470? Who is proved most troublesome to successive kings at Ava?