September 1, 1939 — germany invades poland.september 27, 1940 — germany, japan, and the soviet union sign a pact stating they wi
ll not attack each other and will provide military assistance if attacked by a nation not already involved in the war.december 7, 1941 — japanese bombers destroy large portions of the u.s. navy fleet at pearl harbor.december 8, 1941 — the united states declares war on japan.december 11, 1941 — germany declares war on the united states.december 11, 1941 — the united states declares war on germany.based on the information in the timeline, which causal explanation for u.s. involvement in world war ii is most likely accurate?a. the united states became involved in world war ii to weaken the alliance of germany, japan, and the soviet union.b. the united states became involved in world war ii to protect european allies attacked by germany.c. the united states entered world war ii because japan attacked its navy.d. the united states entered world war ii because both japan and germany declared war on it.
<span>c. The United States entered World War II because Japan attacked its navy.
Not only had Japan attacked the US naval base at Pearl Harbor, but that was an attack against American home soil, in the US territory of Hawaii. (Hawaii later became a state, in 1959.) The next day, President Roosevelt went before Congress and described December 7, 1941 as "a date that will live in infamy" because of the Japanese attack. Congress declared war against Japan, drawing the USA into World War II. Germany and Italy, allied with Japan, responded with a declaration of war against the USA, and the USA responded by declaring war against Germany and Italy as well. </span>
