Which of the following South American cultures is best known for its extensive network of roads and architecture?

The Inca civilization is renowned for its remarkable achievements in infrastructure, particularly their extensive network of roads and impressive architectural feats. The Incas developed a sophisticated system of roads that spanned over 25,000 miles, connecting various regions across the rugged Andean mountains. This network facilitated not only the movement of their armies but also trade and communication between different parts of the empire, enhancing regional integration.

Inca architecture is highly regarded for its durability and aesthetic quality, exemplified in structures such as Machu Picchu and the Sacsayhuamán fortress. Their use of precise stone masonry, without the need for mortar, allowed buildings to withstand seismic activity and the test of time. Additionally, the Incas were skilled at adapting their architecture to the diverse landscapes they inhabited, creating terraces for agriculture and robust bridges to cross difficult terrains.

This combination of extensive roadways and innovative architectural practices highlights the Inca’s significant contributions to engineering and urban planning, setting them apart from other cultures in South America.