Complex sentence: The term appears to have been invented in the mid 1990s by the group Aryan Nations, founded in the early 1970s by Richard G. Butler, who had been associated since the 1950s with another group, the Church of Jesus Christ Christian.
Split into simpler sentences: The term appears to have been invented in the mid 1990s by the group Aryan Nations. This group was founded in the early 1970s by Richard G. Butler, who had been associated since the 1950s with another group, the Church of Jesus Christ Christian.