wars spilling over from European wars ended in a complete victory for the British in the worldwide Seven Years' War. In the peace treaty of 1763, France ceded practically everything, as the lands west of the Mississippi River, in addition to Florida and New Orleans, went to Spain. Otherwise, lands east of the Mississippi River and what is now Canada went to Britain. Steady migration to frontier lands Regardless of wars Americans were moving across the Appalachians into western Pennsylvania, what is now West Virginia, and areas of the Ohio Country, Kentucky, and Tennessee. In the southern settlements via the Cumberland Gap, their most famous leader was Daniel Boone. Young George Washington promoted settlements in West Virginia on lands awarded to him and his soldiers by the Royal government in payment for their wartime service in Virginia's militia. Settlements west of the Appalachian Mountains were curtailed briefly by the Royal Proclamation of 1763, forbidding settlement in this area. The Treaty of Fort Stanwix (1768) re-opened most of the western lands for frontiersmen to settle. New nation The nation was at peace after 1783. The states gave Congress control of the western lands and an effective system for population expansion was developed. The Northwest Ordinance of 1787 abolished slavery in the area north of the Ohio River and promised statehood when a territory reached a threshold population, as Ohio did in 1803. The first major movement west of the Appalachian mountains originated in Pennsylvania, Virginia, and North Carolina as soon as the Revolutionary War ended in 1781. Pioneers housed themselves in a rough lean-to or at most a one-room log cabin. The main food supply at first came from hunting deer, turkeys, and other abundant game. In a few years, the pioneer added hogs, sheep, and cattle, and perhaps acquired a horse. Homespun clothing replaced the animal skins. The more restless pioneers grew dissatisfied with over civilized life and uprooted themselves again to move 50 or a hundred miles (80 or 160 km) further west. Land policy The land policy of the new nation was conservative, paying special attention to the needs of the settled East. The goals sought by both parties in the 1790–1820 era were to grow the economy, avoid draining away the skilled workers needed in the East, distribute the land wisely, sell it at prices that were reasonable to settlers yet high enough to pay off the