"Socialism was seen as a threat to the American system of capitalism" is the one conclusion among the choices given in the question that can be drawn about the climate of American politics in 1918, based <span>on what you read from Eugene Deb's statement to the courts. The correct option among all the options given is option "B". </span>
This is Thomas Jefferson, who was a Republican leader when the party system took hold. He went on to become president of the United States and considered Alexander Hamilton to be a political rival.