Which of the following demonstrates how the american government provides for the common defense of the nation? "we the people of the united states, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this constitution for the united states of america." a. creating state militias b. maintaining national armed forces c. supporting local police departments d. establishing law,