What did President Jefferson hope to significantly promote by encouraging expansion of the United States?

The Land Ordinance of 1785 was adopted by the United States Congress of the Confederation on May 20, 1785. It set up a standardized system whereby settlers could purchase title to farmland in the undeveloped west. Congress at the time did not have the power to raise revenue by direct taxation, so land sales provided an important revenue stream. The Ordinance set up a survey system that eventually covered over three-fourths of the area of the continental United States.[1] The earlier Ordinance of 1784 was a resolution written by Thomas Jefferson (delegate from Virginia) calling for Congress to take action. The land west of the Appalachian Mountains, north of the Ohio River and east of the Mississippi River was to be divided into ten separate states.[2] However, the 1784 resolution did not define the mechanism by which the land would become states, or how the territories would be governed or settled before they became states. The Ordinance of 1785 put the 1784 resolution in operation by providing a mechanism for selling and settling the land,[3] while the Northwest Ordinance of 1787 addressed political needs. The 1785 ordinance laid the foundations of land policy until passage of the Homestead Act in 1862. The Land Ordinance established the basis for the Public Land Survey System. The initial surveying was performed by Thomas Hutchins. After he died in 1789, responsibility for surveying was transferred to the Surveyor General. Land was to be systematically surveyed into square townships, six miles (9.656 km) on a side. Each of these townships were sub-divided into thirty-six sections of one square mile (2.59 km²) or 640 acres. These sections could then be further subdivided for re-sale by settlers and land speculators.[4]

This is English? Sounds more like History.

But I would go with the other persons answer. I don't want to say the entirely same thing as him (or her).