I believe that your answer would be leader Howe
1.) Breeding 2.Population 3.earth's history 4. Natural selection.
Stanley Milgram showed that individuals will cause other individuals harm if ordered by others and if they don't have a direct contact with those other people, but are separated by technology.
In his experiment, people thought they are applying electric shocks to other participant under the orders of the experimenters and most of the participants did not refuse to administer those shocks.
Countries trade with each other when, on their own, they do not have the resources, or capacity to satisfy their own needs and wants. By developing and exploiting their domestic scarce resources, countries can produce a surplus, and trade this for the resources they need. You can integrate all of this into your question. Hope this helped.
The Supremacy Clause<span> is a </span>clause<span> within Article VI of the U.S. Constitution which dictates that federal law is the "supreme law of the land".</span>
