It would be industrialization that changed American culture drastically. This is also related to westward expansion, and in many ways led to the conflicts that brought about Civil War.
<span>Ronald Reagan administration
In order to win the Cold war and the rollback of the communism. Ronald Reagan created a policy that known as the Reagan Doctrine, that includes providing financial and logistical support to the anti-communist groups fighting against Soviet governments in central Europe.
</span>
The war started mainly because of four aspects: Militarism, Alliances, Imperialism and Nationalism.
How the economic policy applied in Chile's exports influences