What are the roots of the american understanding of republicanism constitutionalism?

There are two factors shaped the extraordinary period of constitutionalism in the United States that stretched from the creation of republican governments he saw much changes at the state level in the 1770s and 1780s to the ratification of the federal Constitution in the late 1780s. This is the best answer for this.

The answer would be advertising.

Idon’t understand a word going on right now lol