The president's role as commander-in-chief of the armed forces assures civilian control of

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)

c) troops march forward in close formation against newer, more accurate weapons