A Scottish Engineer (1756-1836) who designed the first modern roads, was:

Question

Accepted Answer

The correct option is 4:
The correct answer is John Loudon McAdam. Born in Ayr, Scotland, McAdam (1756–1836) revolutionized road construction in the late 18th and early 19th centuries, leading to the technique that would eventually bear his name: macadamisation. His innovative design involved using carefully selected, small-sized angular stones laid in successive layers over a prepared, slightly sloped sub-base to ensure excellent drainage. Crucially, he insisted that roads should be elevated above the surrounding ground and emphasized the importance of drainage, correctly believing that it was the sub-base, and not a massive stone foundation, that supported the road surface. His method of tightly compacting small, broken stone fragments created a durable, smooth, and weather-resistant surface, fundamentally changing transportation and paving the way for modern highways.

The incorrect option is 1: Robert Fulton was an American engineer and inventor (1765–1815) known for developing the first commercially successful steamboat, the *North River Steamboat* (or *Clermont*). His primary contributions were to marine engineering and steam power, not road construction.

The incorrect option is 2: Charles Goodyear was an American inventor (1800–1860) who is primarily credited with developing the process of vulcanizing rubber. This process made rubber durable and useful for industrial purposes, and his work has no direct link to early modern road design.

The incorrect option is 3: Samuel Morse was an American inventor and painter (1791–1872) most famous for co-developing the single-wire telegraph system and the Morse code. His innovations were in the field of communications, not civil engineering or road construction.