From the top of Mount Rushmore, the heads of four U.S. presidents look down on the world below: George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt. Who were these great men? How did they become president? And what changes did they bring to the United States of America? The full text downloaded to your computer With eBooks you can: search for key concepts, words and phrases make highlights and notes as you study share your notes with friends eBooks are downloaded to your computer and accessible either offline through the Bookshelf (available as a free download), available online and also via the iPad and Android apps. Upon purchase, you'll gain instant access to this eBook. Time limit The eBooks products do not have an expiry date. You will continue to access your digital ebook products whilst you have your Bookshelf installed.