They were created by the End of the last Ice Age
As a result between the people from the European continent and the people from the North American and South American continents, most of the native populations had died out.
Even though there's the general opinion that the main cause for this were the battles and the killing in them, even though they were numerous and there were casualties, the reason for the mass dying out was totally different, diseases.
The Europeans brought new diseases with them, and the Native Americans were not immune to them, so they spread around them very quickly and they were dying very quickly, which lead to a depopulation of large ares of the continents.
Examples of human-environmental interaction are road constructions, home buildings and gold mines. I hope that this is the answer that you were looking for and it has helped you. Have a nice day.
Crust mantle core should be right
Brazil is one of the only countries that is close to a closed a economy because it barely imports anything into its country.
