Why was a macadam road easier to travel on than a trace road?

A macadam road was easier to travel on than a trace road because it was constructed with layers of crushed stone, providing a smoother and more stable surface. This design allowed for better drainage and reduced the formation of mud or ruts, which are common on trace roads that typically consist of uneven, unpaved paths. The improved surface of macadam roads facilitated faster and safer travel for vehicles and pedestrians alike.