The correct answer is D)macadam. Macadam was an invention keyed by a Scottish man who changed the way we view paving of roads and highways. Macadam is a mixture of small stones crushed together with asphalt, the sticky, black material used for both concrete and macadam. The name Macadam comes from the engineer's name, which was John Loudon McAdam. There had been other attempts at macadam before McAdam, but McAdam improved it and his was the first to arrive in the United States.
Answer:
I'm not quite sure about question nine but question ten is
china to help build railroads
Ireland potato blight
Germany jobs
Answer:
pretty sure it’s C i’m really sorry if it’s wrong i tried
I dont know all the answers but i know one and its
<h2>
B</h2>