Territory natural resources and trading routes
Having more land will allow them to have more resources, larger territories, and create trade routes to places further away from them
That the Constitution required the states to provide defense attorneys to criminal defendants charged with serious offenses who cannot afford lawyers themselves. It began with the arresting case of Gideon.
Along with independence from Britain, Thomas Paine proposed that the colonies take advantage of the massive amount of natural resources and untapped land to the west, so that they could expand their power and influence.