He means that the Vietnam war is a great test for Americans because you must think back when the Vietnam war was going on our American military were being protested against and threatened. Peace protestors rallied against our military and our government going to war with Vietnam. The American spirit here is being tested not only by the war going on but also by its own people.
they were originally intended to encourage black Americans to participate in, and support the war effort, and to reflect an African-American perspective on world and national events.
<em>The major elements of culture are symbols, language, norms, values, and artifacts. Language makes effective social interaction possible and influences how people conceive of concepts and objects.</em>