WORLD HISTORY

Detailed explanation-1: -The construction of high-quality highways was a tremendous advantage, for it sped up the pace of communications considerably. For example, a courier on a Roman road could travel at speeds of up to 75 miles (121 km) daily.

Detailed explanation-2: -They were expertly engineered. Crews began by digging shallow, three-foot trenches and erecting small retaining walls along either side of the proposed route. The bottom section of the road was usually made of leveled earth and mortar or sand topped with small stones.

Detailed explanation-3: -They built harbors, canals, and a vast system of roads. While it lasted, the Pax Romana (Roman Peace) provided the order and stability that trade required. The Roman army made the roads and sea routes safe for traders. In turn, trade helped the economy grow.

Detailed explanation-4: -Five examples of Roman inventions include aqueducts, roads, concrete buildings, medical tools for the battlefield, and the Julian Calendar. Aqueducts were pipelines that brought fresh water from the mountains to areas without water. Essentially, these aqueducts provided fresh water to urban areas in the Roman Empire.