A mistake in the designation of the border was made, failing to include a small strip of land it in the Treaty that marked the boundaries. The inhabitants of Cospaia declared that they would not accept any authority. For years, the small communities provided for their own subsistence by growing tobacco, called the "tornabuona grass". For irrigation needs  an embankment was raised as a dam to create a pond. Cospaia's cultivation and trade of tobacco brought a degree of prosperity, but also a small invasion of smugglers, because tobacco was illegal in the Papal States.