Final answer:
The Carpa Nan, also known as the Qhapaq Ñan, was an Inca road system that connected different parts of the empire, supporting the main point made by the writer.
Step-by-step explanation:
The question refers to the Carpa Nan and how it underscores the main point made by the author in the provided excerpts concerning historical societies and their advancements. Carpa Nan, also known as the Qhapaq Ñan, was an extensive Inca road system that played a critical role in connecting the various parts of the Inca Empire. This infrastructure facilitated not just travel but also communication, trade, and governance, helping to unite diverse cultures and territories under Incan rule. Therefore, the correct answer is (D) connected the parts of the empire.
The Carpa Nan was an extensive network of roads that spanned thousands of miles, linking the empire together and facilitating communication, trade, and military movement. Therefore, the correct answer is option (D) connected the parts of the empire.