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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.

Verified Answer :

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

it is b: McAdam invented a method to build stone roads.

hope this helps!

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