(A) ** The attack on Pearl Harbor
(B) The invasion and division of France
(C) The invasion and division of Poland
(D) Attacks on U.S. ships in the Atlantic
EXPLANATIONS BELOW
Concept note-1: -On December 7, 1941, following the Japanese bombing of Pearl Harbor, the United States declared war on Japan. Three days later, after Germany and Italy declared war on it, the United States became fully engaged in the Second World War.
Concept note-2: -The Japanese attack on Pearl Harbor on December 7, 1941, ended the debate over American intervention in both the Pacific and European theaters of World War II. The day after the attack, Congress declared war on Imperial Japan with only a single dissenting vote.
Concept note-3: -Its most significant consequence was the entrance of the United States into World War II.
Concept note-4: -On December 7, 1941, Japan staged a surprise attack on Pearl Harbor, decimating the US Pacific Fleet. When Germany and Italy declared war on the United States days later, America found itself in a global war.
Concept note-5: -Overview. On the morning of December 7, 1941, Japan attacked the US naval base at Pearl Harbor, Hawaii. The surprise attack by some 350 Japanese aircraft sunk or badly damaged eighteen US naval vessels, including eight battleships, destroyed or damaged 300 US aircraft, and killed 2, 403 men.