Did you know that eastern Tennessee was once the country of Franklin? Or that there are more species of mammals in Montana than in any other state? These are among the interesting facts found in this informative history and reference book.Gain important new insights to American history. Readers will follow the birth of the United States from the first colony to become a part of the new nation in 1787 to the last territory to be admitted to the Union 172 years later. Along the way, young readers will be introduced to the wide array of native peoples populating the continent and the explorers who helped open the way to westward expansion of the growing nation. And students of history will gain new insights into the Civil War that broke the young nation apart.TIME For Kids® Our 50 United States makes a connection between what readers want to know and what they need to know to be successful as young learners and citizens. It's time to celebrate what makes our nation strong.