Which of the following was a consequence of the japanese surprise attack on pearl harbor?
a. the united states became more committed to isolationism.
b. the united states declared war on germany.
c. japan was able to capture nearly all of china.
d. japan abandoned its alliance with the axis powers.

B) The United States declared war on Germany.

Explanation:

The Japanese suprise attack on the US military base at Pearl Harbor on December 7, 1941 resulted in the US abandoning their isolationist policy in favor of an interventionist policy. Just one day after the attack, the US declared war on the Japanese empire. Since Japan and Germany were allies, Germany declared war on the US. The US responded by officially declaring war on Germany as well.

Due to the alliance between Japan and Germany, the US declared war on Germany making letter B your correct answer.

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