Economic rule that explanes why we stop purchesing good and surveses

Which beliefs and principles in the declaration of independence and the u.s. constitution create a national identity? a.) belief in god, allegiance to popular sovereignty, and states’ rights. b.) free enterprise system, free trade system, and separation of powers. c.) individual freedom, political equality, and unalienable rights. d.) powerful executive branch, judicial review, and bicameral legislature.