Which pre-Columbian empire is known for having built the most extensive network of roads in the Americas?

The Incas

The Inca Empire, stretching along the west coast of South America, built an impressive network of roads extending about 40,000 kilometers across mountains, valleys, and deserts. This road system, known as the Qhapaq Ñan, was crucial for maintaining the unity of the empire, allowing rapid movement of armies, messengers, and goods throughout the empire. The Inca roads were an engineering feat, including suspension bridges, staircases carved into rock, and raised causeways, demonstrating the ingenuity and adaptability of the Incas to challenging environments.