In the 15th century, the Inca drastically expanded the boundaries of their territory. This growth has often led scholars to seek to understand just how the Inca were able to expand their empire so quickly. In this Opening Up the Textbook lesson, students examine four sources to explore different accounts on what aided the Inca in their rise.
Image: Photo of Macchu Picchu taken in 2007. From the Wikimedia Commons.
