"Congress shall make no law respecting an establishment of religion." This right, which begins the First Amendment, is an important cornerstone of American culture. Freedom to practice any religion one might choose--or no religion--isn't a guarantee in many countries around the world. This motivating book, a support to elementary social studies curricula, explains in accessible terms why this freedom became a part of the Bill of Rights and how it's been tested and interpreted over the years. Fact boxes, photographs, and a graphic organizer help readers further comprehend the importance of key ideas and make connections to their own lives.