- Textbooks often present a simplistic and optimistic view of American history, ignoring the struggles and failures of marginalized groups. - Helen Keller, for example, was a radical socialist and member of the Industrial Workers of the World, but this aspect of her life is often overlooked in textbooks. - Textbooks also downplay the negative actions of American presidents, such as Woodrow Wilson's intervention in Latin America and his racist policies. - The textbooks fail to acknowledge the impact of European diseases, the mistreatment of Native Americans, and the influence of Native American cultures on American democracy. - The textbooks also perpetuate stereotypes about Native Americans and minimize the role of slavery in American history.