The vast trade fleets of the ever-growing city-state of Tarrkarn require lots of quality lumber to be built. However, the lands around the city don't have very many thicc trees. Thus, in order to feed their growing demand for wood, Tarrkarn imports lumber. This great and increasing demand quickly stretched all of the meagre Tedeshan woodlands to their limits. Good thing that there's some decent forests to the southwest and northwest of the Tedeshan's traditional lands.

To the southwest, the land is coastal and rich with freshwater creeks, but the forests are of thinner density. To the northwest, the forests are much larger and denser but the land is otherwise less habitable. In ages past, when the Tedeshan migrated away from their homes slower, this would cause a dilemma of which province the migrants would settle first. But now, increased demand from the state of Tarrkarn, faster population growth from the rapid advances in agricultural (in particular crop rotation and the yoke), and better tolerance for less ideal regions (similarly brought about by the increases in agricultural and other technologies), have enabled Tedeshan pioneers, outcasts, and wanderers to set up camp in distant lands at twice the rate they used to. In particular, the urban poor of Tarrkarn, and the lesser Tedeshan cities of Shaikarn and so on, as well as criminals exiled from these new bastions of law and order, have migrated en masse seeking modest riches and a lack of meddling cops.

These new settlements, located primarily on the riverbeds of whichever freshwater creeks exit in these lands, and along the shoreline for the southwestern territory, have become refuges for the castaways and undesirables of the big cities, as well as the usual crew of ambitious village-chieftains-to-be, those bored of their dinky, safe hometowns looking for that exciting frontier life, and war refugees fleeing from the constant Exaanos raids. Their small herds of livestock and advanced agricultural expertise allow them to survive and thrive in their new homes, pushing out or assimilating any podunk hunter-gatherer bands or proto-agrarian tribes already inhabiting the area. Swanky trade goods such as Exaanos cheeses, Rahmtʊ fruits, and Eheni papyrus flow into these villages in exchange for the lumber chopped from them, powering the mighty Tarrkarn trade engine.

Now the fleets of Tarrkarn have two new reliable sources of lumber, the settlers of these new lands have clean slates and respectable careers in forestry, and the trade keeps flowing everywhere. It's a win-win-win scenario. Everybody's happy.

Map of territories being expanded into.