What effect did the japanese attack on pearl harbor have on u. s foreign policy

The attack thrust the United States into World War 2 and set in motion a series of events that would transform the country into a global superpower and guardian of international order.

Explanation:

this is what i found on the web but i reworded it

   Change from a neutral foreign policy ahead of Perl Harbour itself, through a gradual increasingly active participation in international politics, to one of the main factors of international politics

Explanation:  America has been running a neutral foreign policy for a long time even before 1917, when it was forced by German submarine attacks to enter the WWI,  and also after the WWI until the attack on the Perl Harbour by Japan in December 1941. America did not intend to enter the WWII, it maintained its neutral foreign policy, but the sudden Japanese attack again forced America to enter the war for the defense of the nation and strategic points in the Pacific. Later, in the course of the war, the role of America grew and changed, joining the Allies in the fight against the Nazis in Europe.

Conscious of being actively involved in the preservation of world peace after WWII, America actively took part in creating a world peace policy, as well as counterbalancing the rising Soviet Communism. Thus, after the Second World War, America gradually became increasingly involved in international peacekeeping operations, became a symbol of the defense of democracy during the Cold War. Thus, foreign policy has completely changed and became very active in international affairs.

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