Answer:
1. Some movies reflected antiwar sentiments instead of patriotic, "flag-waving" ideas about war.
4. Literature depicted the ambiguous and complicated nature of Vietnam warfare.
5. Movies about the war replaced westerns; they featured more complex battles between good and evil.
Step-by-step explanation:
1. Some movies reflected antiwar sentiments instead of patriotic, "flag-waving" ideas about war.
The fact that the US got bogged down in the Vietnam war for more than 10 years, which resulted in a big loss for the American troops, generated an antiwar feeling in the American culture. This critical perspective of the horror of war can be seen in movies like Apocalypse Now, Full Metal Jacket, Casualties of war, Platoon, and Born 4th July, among many others.
4. Literature depicted the ambiguous and complicated nature of Vietnam warfare.
This critical view on war was also depicted in literature, which focused on war crimes and the moral catastrophe for soldiers fighting in the field. Many of this literature was written by journalists and veterans of war who fought in Vietnam and knew the facts from firsthand experiences.
5. Movies about the war replaced westerns; they featured more complex battles between good and evil.
Most Hollywood war movies before Vietnam depicted simple stories of fights between good and evil, where the good guys and the bad guys were easily recognizable. But after Vietnam, most war movies showed complex stories in which the viewer cannot recognize easily the good side and the bad side. This is due to the moral confusion that the war caused in American society and the conflict of national feelings versus anti-war sentiments.