The concept of having three branches of government—executive, judicial, and legislative—was introduced by montesquieu. what term describes this type of governmental system?

special interest groups must step back and let the process work itself out a representative can amend it at several points in the congressional staffers must do homework and report to the floor on what they 've learned

im not sure its either a leader of a group of congresspeople or a person from a congressmans district

sorry im not sure