Which roman contribution to political theory was adapted by the founding fathers?

Roman contribution to the political theory adopted by the Founding Fathers is Representative government. The Representative government represents electoral system that allows citizens to elect a representative who would make laws on their behalf, instead of direct (personal) voting on laws and other government actions.

general allotment act (dawes act) february 8, 1887

amendment to the dawes act, february 28, 1891

commission to the five civilized tribes (dawes commission), march 3, 1893

the western roman empire flourished, but the eastern portion of the empire struggled.