Answer:
The attack turned Americans that force was required to prevent the aggression of Japan.
Step-by-step explanation:
Prior to the invasion on Pearl Harbor, the government of the United States wanted to stay out of the Second World War. The American citizens observed the policy of Isolation, according to which, they will not involve in the war and will remain neutral. However, the attack of Japanese troops on Pearl Harbour led the American to change their policy of being neutral. Consequently, the Congress of the United States officially declared war on Japan and entered the Second World War.