Majapahit
Majapahit rose in Java when a local prince tricked a punitive Mongol expedition into fighting his rivals for him, then turned on the Mongols and drove them out. At its height it claimed authority over much of the Indonesian archipelago and the Malay peninsula — a maritime realm held together by trade, tribute, and threat rather than administration. It was Hindu-Buddhist, and it was the last such power in the region before Islam spread through the islands. Modern Indonesia treats it as the precedent for a single state spanning the archipelago.
A durable new order — a state, an institution, a system of rule — is deliberately built and consolidated, outlasting the people who founded it.