The creation and revision of textbooks can be a never-ending political process, with many groups fighting over the version of history they think should be presented as the truth to schoolchildren. For example, Texas history textbooks did not include slavery as a central cause of the Civil War until 2018, even though slavery has long been understood to be at the core of the Civil War. The debate continues––the Texas Freedom Network still thinks the revised curriculum " not paint a full picture of civil rights movements in the United States," among other failings. The subjective process of choosing narratives to include in a history textbook can be seen in Marty Rowley's (a Republican member of the education board) comment on the controversy over Texas textbooks: "Public education is by nature public... our job is to make sure that the standards reflect what Texans want their children to be taught.”