The
Hanthawaddy Kingdom (; , ; also
Hanthawaddy Pegu or simply
Pegu) was the dominant kingdom that ruled lower
Burma (Myanmar) from 1287 to 1539 and from 1550 to 1552. The
Mon-speaking kingdom was founded as
Ramaññadesa ((, ) by King
Wareru following the collapse of the
Pagan Kingdom in 1287 as a nominal
vassal state of the
Sukhothai Kingdom and of the Mongol
Yuan dynasty. The kingdom became formally independent of Sukhothai in 1330 but remained a loose federation of three major regional power centres: the
Irrawaddy Delta,
Bago, and
Mottama. Its kings had little or no authority over the vassals. Mottama was in open rebellion from 1363 to 1388.