It was a mistake to welcome the Americans to Nez Perce land
Following the rise of communism in Russia there was what was called the "Red Scare" in the United States which led to anti-communist activities such as the "Palmer Raids" which were carried out by Mitchell Palmer. Therefore, A) Attorney General Mitchell Palmer used the public's fear of communism to start a witch hunt for suspected communists is the best answer.
Great Britain and France placed the newly formed United States in the middle of their problems in the late 1700s by pressuring the United States to take sides.
Word credibility can be defined as the believability of words.