The changes in government and in the land question in Illinois were typical of changes in other frontier regions, but although worthy of note as helping to make a more attractive place for settlement, they are by no means sufficient to account for the great migration to the westward. Why that migration took place and how it was accomplished are interesting and important questions. Emigration from New England resulted largely from financial and industrial disorganization caused by the close of the war, and a year of such continued cold weather as to produce a famine. This movement was interesting, dramatic, and large in volume, but its influence upon Illinois was slight, because the tide was stayed to the eastward of that state.(285) Migration from the South was also large, and it was from this source that most of the immigrants to Illinois came. In 1816 there was a severe drought in eastern North Carolina, and many planters cut their immature corn for their cattle, while great numbers sold their property and joined the emigrants.(286) Kentucky, still a favorite place for settlement, was in the midst of a land boom which reached such proportions as to cause a large volume of emigration to Illinois, Missouri, and the southwest. The buyer of Kentucky land was often a neighbor who wished to enlarge his farm and work on a larger scale, or some well-to-do immigrant who preferred the location to a more remote region. Land sold on credit and at fictitious prices, the seller in turn buying land for which he frequently could make only the first payment. Retribution did not come, however, until after 1820, and for some years it seemed as if Kentucky was to become a source of population, for it was to Illinois and Missouri, and to a lesser degree to Alabama, what New England was to Ohio.(287) Probably chief among the reasons for migration from the South was the increase of slavery, with the resulting changes in industrial and social conditions. Early in the century the growing importance of the cotton crop began to hasten a stratification of opinion which was determined by physiographic areas. The western parts of Virginia, North Carolina, and South Carolina, the northern part of Georgia, and the eastern parts of Kentucky and Tennessee, respectively, being hilly and less fertile than the coastal plain, became the center of the southern anti-slavery sentiment. On the plain settled the wealthy planters, and later the poorer Germans and Quakers settled in the uplands. Only when cotton-raising became very profitable was slavery to intrude upon the latter location.(288)