Abundance of resources = trade/cooperation
Scarcity of resources = conflicts
The more resources you have the more likely a civilization was to get along with those around it, although at the same time if the civilization was weak and had a lot of resources it would be at risk of invasion/attack.
Laissez-faire economics and tariffs--the 1920s presidents supported a hands-off approach to the economy and taxes on imported goods.
Conservatives believe the government should not regulate the economy and allow it to grow as needed. They were more pro-business than worker, limited support for unions. Tariffs were passed in the 1920s to promote American business instead of foreign imports.
There are multiple things that caused the beginning of World War I. However, there was a certain event that pushed the power of Europe on its edge and that was when Archduke Ferdinand was assassinated. This is the reason why Europe was being caught in the World War I.
Northern states who could use the lands to create colleges serving the whole US
