Ruhollah Khomeini's influence can be seen throughout Iran today. Through his work as leader, Khomeini brought about the Islamic Revolution, rejecting Western ideas and replacing them with his own. The first prime minister of Tanzania, Julius Kambarage Nyerere was an important leader who focused on bringing his people back to their roots and rejecting colonization. Through this book, readers will learn more about these two leaders and other world leaders of the 1900s. With important details about each person's life and work, readers will discover how these leaders changed history.