What do you think are some key purposes for a constitution?

Goals of the Constitution  We the People of the United States, in Order (1)to form a more perfect Union, (2)establish Justice, (3)insure domestic Tranquility, (4)provide for the common defense, (5)promote the general Welfare, and (6)secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish

Explanation:

interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)