How do the united states work together to preserve the union

States may also join with other states in regional groups to work together to reduce water and air pollution. The states also work together with the federal government. Federal and state governments often work together to share the costs of providing a wide range of social services to the American people.

Hope this helps (:

they had more african americans than any other state.

hope this , have a good day. c;

i really do want to but i just don't know it i'm so sorry : (