How did the surprise attack on pearl harbor change the public's opinion about the war? the attack brought out a strong isolationist sentiment as people remembered world war i. the attack compelled people to call for the united states to join the league of nations. the attack reminded the country that its naval bases in the pacific were vulnerable. the attack convinced americans that force was necessary to stop japan's aggression.

The correct ansswer is The attack convinced Americans that force was necessary to stop Japan's aggression.

Before the attack on Pearl Harbor, the US wanted to stay out of World War II. Many citizens followed an isolationist policy. This meant that they did not want the US government to send troops to Europe or Asia during this time. This isolationist sentiment was influenced by America's participation in World War I.

However, this all changed after the Japanese military attacked a US military base in Hawaii. The next day, the US officially declared war on Japan and entered World War II.

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