PLEASE HELP ME how did the Battle of Antietam impact the civil war?
how did the Battle of Gettysburg impact the civil war?
how did the Siege of Vicksburg impact the civil war?
how did the Battle of Chickamauga impact the civil war?

to protect the united states' role as a world leader, president truman wanted to prevent the soviet union from spreading communism beyond its post-world war ii boundaries. he declared that the united states must assist any nations struggling to prevent a communist takeover.

yes.

explanation:

because it let the japanese know who had the upper hand in the war.