The u. s government structure is that of a constitutional democracy. what is a constitutional democracy?

Constitutional Democracy is a system of government in which 1) political authority- the power of government is defined,limited and distributed by a body of fundamental law call “the constitution” and 2) the electorate- the general voting populace within the political society has effective meaning on controlling the elected representatives in the govt and hold them accountable for their decisions and actions while in office

lincoln declared that slavery should not be allowed to spread into the new states, and of course this angered the south at the time.