Final answer:
The ancient Romans built about 44,000 miles of roads, roughly translating to 70,800 kilometers. These roads were constructed with concrete and stones, engineered for durability and military efficiency, and many are still visible today. Their road system was pivotal in maintaining the empire, promoting trade, and assimilating conquered territories into Roman culture.
Step-by-step explanation:
The Romans are renown for their extensive network of roads, which was a cornerstone of their empire and facilitated military, administrative, and economic control. By AD 200, the Roman road system comprised about 44,000 miles (approximately 70,800 kilometers) of well-constructed roads. These engineering marvels were erected using concrete and stones, and many segments have stood the test of time, becoming vital conduits for trade and culture throughout the vast Roman territories. The roads' straight trajectories, often going over hills instead of around them, exemplify their primary purpose for military efficiency and troops' movement.
Roman roads served not only as transportation pathways but were also a representation of the empire's technological and engineering prowess. Their constructions have endured millennia, with some still in use today, adapted for modern transport. The Romans' mastery of building arches and domes in their architectural works translates similarly to their skill in creating long-lasting roads, bridges, and aqueducts throughout their empire.