In the first quote from Carnegie in Wealth and Its Uses, what does Carnegie mean by “contributing most to the hive”?

Idon’t know what that article is and is there any answer choices?

Photographs of soviet missiles from 1950

One of the things that allowed native americans in mexico to settle cities larger than those in areas to the north was "b. the development of cities that were built by an earlier civilizations," since mexico had been the home of some of the world's most advanced civilizations before the columbian invasion