Before 1720, most colonists in the mid-Atlantic region worked with small-scale farming and paid for imported manufactures by supplying the West Indies with corn and flour. In New York, a fur-pelt export trade to Europe flourished adding additional wealth to the region. After 1720, mid-Atlantic farming stimulated with the international demand for wheat. A massive population explosion in Europe brought wheat prices up. By 1770, a bushel of wheat cost twice as much as it did in 1720. Farmers also expanded their production of flax seed and corn since flax was a high demand in the Irish linen industry and a demand for corn existed in the West Indies. Thus, by mid-century, most colonial farming was a commercial venture, although subsistence agriculture continued to exist in New England and the middle colonies. Some immigrants who just arrived purchased farms and shared in this export wealth, but many poor German and Irish immigrants were forced to work as agricultural wage laborers. Merchants and artisans also hired these homeless workers for a domestic system for the manufacture of cloth and other goods. Merchants often bought wool and flax from farmers and employed newly arrived immigrants, who had been textile workers in Ireland and Germany, to work in their homes spinning the materials into yarn and cloth. Large farmers and merchants became wealthy, while farmers with smaller farms and artisans only made enough for subsistence. The Mid-Atlantic region, by 1750, was divided by both ethnic background and wealth.