Which number represents the decade in which the united states was involved in world war ii ?

a)2
b)3
c)4
d)5

The right answer is D)5. World War II started in Europe in 1938, but the US  issued declarations of neutrality and stood neutral until 1941. With one stroke at Pearl Harbor on December 7, the Japanese had silenced America’s debate on neutrality. People boiled over in vengeful fury as The United States was dragged into the Second World War.  Congress voted for the war resolution with near unanimity. On December 11, Germany and Italy declared war on what Hitler called the “half Judaized and the other half Negrified” United States, a nation that he insisted “was not dangerous to us.” The separate wars that were being waged by armies in Asia, Europe, and Africa had become one global conflict, shattering American isolationism.

i need the diagram.

the correct answer is a