Please answer these quickly

Why are constitutions, both federal and state, necessary for our government?

Need will give brainliest which of the following was the most significant aspect of revel's election to the senate?

President clinton, on the fortieth anniversary of the events in arkansas surrounding the "little rock nine," stated that "when the constitutional rights of our citizens are threatened, the national government must guarantee them." this principle was the basis for using federal authority in: the expansion of voting rights to women. the passage of the civil rights act of 1964. the passage of the americans with disabilities act. all of the choices.