In 1756, the government appointed Weiser and Ben Franklin to lead construction of a series of forts on the frontier between the Delaware River and the Susquehanna River. In the fall of 1758, Weiser attended a council at Easton, Pennsylvania. Colonial leaders from Pennsylvania met with the Iroquois and other Native American tribes. Weiser helped smooth over the tense meeting. With the Treaty of Easton, the tribes in the Ohio Valley agreed to abandon support for the French. This collapse of Native American support was a factor in the French decision to demolish Fort Duquesne and withdraw from the Forks of the Ohio.