The correct answer to the question is:
According to President Bush, the country that belonged to an "axis of evil" that supported terrorism was:
- Afghanistan
President Bush mentioned Afghanistan as one of the countries forming the "axis of evil" during his State of the Union address in 2002. This term was used to describe countries that were seen as supporting terrorism and posing a threat to global security. Afghanistan, at that time, was specifically associated with sheltering and supporting terrorist groups like Al-Qaeda, which was responsible for the 9/11 attacks in the United States.