How did the Twenty-Sixth Amendment address the concerns of American youth during the Vietnam War?

d: social contract theory

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.

d.

the northwest territory became the most densely populated area in the u.s.