The industrialization was indeed followed by an increase of trade
<u>Answer</u>:
There were few reasons why North America didn’t develop any major civilizations similar to the mayans.
<u>Explanation</u>:
It is usually said that weather around Arid-America was rough. So, it was difficult to cultivate crops without use of modern machinery. There were lesser number of water bodies. So, keeping large number of people was difficult.
Present day US did have advanced type of civilization, but it did not get close to the mark of Aztecs or Mayans. North America had large cities, advanced societies and culture that were rivals of the Incas, Mayas and Aztecs. But they were less in numbers so were unidentified.
To be exactly fair, McCarthy never provided any solid evidence about any of his claims.
In front of the audience, McCarthy only waved a list written on a paper that according to him was the names of state department employees that were communists