This is an answer for WW2!
Prior to the attack of Pearl Harbor the general view was this was a European problem and in Asia Japan was invading placed they had never heard of so no one really wanted to get involved in something that did not directly affect them.
When Japan attacked Pearl Harbor, the American population resoundingly want nothing but the destruction of the Empire of Japan. It is wrongly taught that the USA also declared war on Germany at the same time. This is not correct we originally only declared war against Japan since they were the ones who attacked us. It was only after Germany and Italy declared war on us did we reciprocate a few days later.
Pretty much Americans wanted revenge for Pearl Harbor against those who struck us, no one else.
The Americans feel scared of the war. they felt hurt and sad because they losed someone that they loved and cared about. also they felt that the most important thing was winning the war.
↓yes↓
his call to americans to be willing to endure shortage to help the war effort
They felt like it should have happened faster.
While most African Americans serving at the beginning of WWII were assigned to non-combat units and relegated to service duties, such as supply, maintenance, and transportation, their work behind front lines was equally vital to the war effort.
They fought in it.
wasting resources
France and SpainThe groups that helped the patriot war effort were; Slaves, apprentices, native Americans, Indian and women.
Most Americans initially had mixed feelings about entering World War II, however, after the bombing of Pearl Harbor in 1941, public opinion shifted in favor of the war effort. The vast majority of Americans supported the war, with many volunteering for military service and others contributing to the war effort on the home front through rationing and working in war industries. The war also resulted in a sense of unity and patriotism across the nation.
It was someone else's problem. Which it was.
Technology developed during the war was used for consumer products.
CORE Congress of racial equality. African Americans in the military, Mexican Americans in wartime and the Japanese Americans in the War effort: Japanese American Citizens League.Read more: What_events_show_the_persistence_of_racial_tension_during_World_War_2