Early American Civilization (Mayans, Incas and Aztecs): 2nd Grade History Book Children's Ancient History Edition Life was not always as it is today. A lot has changed over the years. So many people placed their lives on the line to influence the modern-day American culture and tradition; that’s why it’s important your child learns about the past too. Learning to appreciate what happened before will help boost your child’s understanding of the present. Open this book, and get ready for a blast to the past!