The Mannerism and the Baroque Styles came after the Renaissance movement. Mannerism broke the basic rules of the High Renaissance like balance, harmony, and moderation.
Baroque was adopted by the Catholic church and showed power. Its main characteristics were rich details, dramatic effects, the heavy use of gold.
Both of those movements broke basic principles of the renaissance of balance, harmony, and moderation. Rules of proportion were ignored and religion was the main subject, it was a religious revival.
Republican Isolationists refused to ratify President Wilson's League of Nations after World War I because they feared it would draw the United States into future European conflicts. At the end of World War I, the US was only just begin to depart from its previous policy of foreign affairs, which was isolationism - staying out of other countries' affairs. The Isolationists feared that tethering the United States to the League of Nations would result in the US being required to come to the aid of an invaded European state at a later date.
One could infer from this argument that "<span>Since the states printed their own money, trade between the states was almost impossible," since there was no unified currency with which to buy goods and services. </span>
So it's been years since I've studied this, but I do know one thing important is the introduction of coin Currency and establishment of banks