What territory was included within the Inca Empire?

The Inca Empire was the largest empire in pre-Columbian America and covered a vast territory that included parts of several modern South American countries. The correct choice encompasses the regions of Colombia, Ecuador, Chile, Peru, Bolivia, and Argentina, illustrating the extensive reach of the Inca civilization at its height in the early 15th century.

The Incas developed a sophisticated administrative and political system that enabled them to govern such a large area, which was marked by diverse geography, including mountains, deserts, and coastlines. This vast territory was managed through a network of roads and a system of taxation that supported the sprawling empire.

The other options are either too limited, such as focusing exclusively on Peru or only adding Chile without accounting for the full extent of Inca territory, or include territories that were not part of the Inca Empire, such as Brazil. This comprehensive inclusion of various modern countries highlights the remarkable scope of achievements and the cultural influence of the Incas across a substantial portion of western South America.