Which answer best describes John McAdam's role in the history of transportation in America?

McAdam invented the first steamboat.
McAdam invented a method to build stone roads.
McAdams's steam engine was used to build roads.
McAdam's steam engine powered the first locomotive.

1 answer

The answer that best describes John McAdam's role in the history of transportation in America is: McAdam invented a method to build stone roads.

John McAdam is known for developing the technique of "macadamization," which involved creating a smooth and durable road surface using crushed stone, significantly improving road construction and maintenance.