Following Oceanykan Involvement in the Chola Invasion of Srivijaya, trade with the Nusantara (maritime Southeast Asia) grew exponentially. Though the Malay Archipelago was rich in most trade goods, and did not strictly require any Oceanykan ones, many endemic products soon proved popular in Malay courts and further away. However, many of these products required large, specialised labour pools which would have to abandon grain agriculture and soldiery, the two pillars of Oceanykan society at the time. This new economic scenario brought about a number of significant changes.
- Cities grew as their specialised industries became more important and governments became more centralised. With them, so did their infrastructure; aqueducts, roads, bridges, ports, markets, hospitals and plazas made urban centres livelier and more productive, thus more capable of engaging with The Goldlines, Oceanyka's continental trade network leading to Asia.
- Rural labour shortages became less severe through land development; A single Klongen or Western Giant Wombat could plough as efficiently as multiple peasants, while irrigation works and canals became more widespread. These public works were funded by the vast profits of trans-continental trade, allowing developed city-states and statelets to out-compete traditional feudal regimes in agricultural production. Regional agricultural trade became the backbone of many economies, significantly altering the diets and daily lives of all Oceanykans.
- The loss of landed warrior-nobles and peasant soldiers was supplanted by the hiring of professional mercenaries, as well as the creation of officer schools, whose graduates were largely loyal to their lord or burgher. Many of these mercenaries used novel tactics and equipment from abroad, such as lamellar armour and Asian swords, but also crossbows and later on fire lances. Feudal armies were unable to compete with these well-paid, well-trained, well-armed and motivated mercenary armies and the lower nobility lost power.
- Institutions which had gained increasing power and importance during the Great Pestilences such as academic societies, state bureaucracies and organised priesthoods became entrenched in Oceanykan society, rivalling warrior-landowners. Their presence allowed advances in science, technology, public administration, civic society and diplomacy to emerge, helping in the development of Oceanykan civilisation. The latter was particularly important, as it allowed a number of treaties and truces to be signed between the continent's political entities, finally ending permanent warfare as a way of life.
Oceanyka's increasing engagement with the world economy, and the attention it began to draw from European colonial powers, led to the Economy of Transitional Middle Age Oceanyka.