Answer:
While avoiding the conflict until 1941, World War II marked a turning point for American isolationism. As Germany and Italy swept through Europe and North Africa, and Japan began taking over Eastern Asia, many Americans started to fear that the Axis powers might invade the Western Hemisphere next. By the end of 1940, American public opinion had started to shift in favor of using U.S. military forces to help defeat the Axis. hope this helps.
Germany wanted to build up her empire. This is known as imperialism.
You should always use a reference point such as (0,0) to determine which side of the line to shade. For example we have the equation y>2x-1 we then use the point (0,0) by substituting the point in the equation.
y>2x-1 -----> 0>2*0-1
we then solve and make sure the point satisfies the inequality.
0>2*0-1 ------> 0-1=-1 ----> 0>-1
We see that the point does satisfy the equation so we shade whatever side of the line that includes the point (0,0)
Hope this helps!