The U.S. government openly stated that they would view any European interference in Latin America as "an act of aggression". This was articulated clearly in the Monroe Doctrine, which stated that the US would respond with military force.
Answer:
They made tools from stone
The north of the U.S. was considered to be more advanced because they had a lot better technology and they were more on the industry side, where as the south did agriculture
. They were all rulers during the Mogul Dynasty.