 The Pagan Empire <unk> and anarchy ensued . The Mongols , who probably preferred the situation , did nothing to restore order in the next ten years . In March <unk> , they accepted the voluntary submission of King <unk> of Pagan although he controlled little beyond the capital city of Pagan ( <unk> ) . But <unk> was overthrown nine months later , and the Mongols were forced to intervene , leading to their second invasion in 1300 – 01 . 
