Which of the following civilizations constructed a system of long-enduring concrete roads that is still commonly used during the modern era?

The Aztec civilization is known for its impressive architectural achievements and urban planning, particularly in the construction of temples and cities like Tenochtitlan. However, they did not develop a system of concrete roads that has endured through time in the same way as the Romans. Their infrastructure was primarily based on local materials and lacked the extensive connectivity that Roman roads provided.

While the ancient Greeks made significant contributions to various fields such as philosophy, art, and architecture, their road systems were not as advanced as those of the Romans. Greek roads were typically unpaved and constructed with a focus on local terrain, lacking the enduring quality and systematic design that characterized Roman roads.

The Egyptian civilization is famed for its monumental constructions, such as the pyramids and temples, but their road systems did not utilize concrete and were primarily designed for local travel. The Egyptians focused more on transportation via the Nile River rather than developing extensive road networks comparable to those of the Romans.