Respuesta :
The best answer to describe John McAdam's role in the history of transportation in America is : McAdam invented a method to build stone roads.
Back then, the method is called 'Mcadamisation' , using various of mixed materials to build a smooth hard surfaces
Back then, the method is called 'Mcadamisation' , using various of mixed materials to build a smooth hard surfaces
it is b: McAdam invented a method to build stone roads.
hope this helps!