The dynasty regrouped and defeated the Portuguese in 1613 and Siam in 1614. It restored a smaller, more manageable kingdom, encompassing Lower Myanmar, Upper Myanmar, Shan states, Lan Na and upper Tenasserim. The Restored Toungoo kings created a legal and political framework whose basic features would continue well into the 19th century. <answer>The crown completely replaced the hereditary chieftainships with appointed governorships in the entire Irrawaddy valley</answer>, and greatly reduced the hereditary rights of Shan chiefs. Its trade and secular administrative reforms built a prosperous economy for more than 80 years. From the 1720s onward, the kingdom was beset with repeated Meithei raids into Upper Myanmar and a nagging rebellion in Lan Na. In 1740, the Mon of Lower Myanmar founded the Restored Hanthawaddy Kingdom. Hanthawaddy forces sacked Ava in 1752, ending the 266-year-old Toungoo Dynasty.
Did the original chieftains maintain power political power?
The crown completely replaced the hereditary chieftainships with appointed governorships in the entire Irrawaddy valley