the 1920's. This is when the US started to rise to the top. The assembly line is what had everyone building things in large amounts. Here's an example.
ok there are 5 people, each of us has a letter .
Person 1: A - He gives a to person 2
Person 2: p - puts Ap together and passes it to person 3.
Person 3: p - Puts it together and gets App passes it to person 4
Person 4: l - Adds it to the App to get Appl, then gives to person 5.
Person 5: e - Puts the finishing touch on the project and there finale thing is...
Apple!!! Do you get it now?
"<span>b. Traveling salesmen did not offer a wide variety of goods" would be the best option from the list, but it had more to do with the fact that catalogs were cheap to make and easy to distribute. </span>
Soil Erosion making the soil less and less useful
Answer:
288 years from 618 to 906 A.D.
