The increase of trade led to a new kind of economy. During the middle ages people traded goods for other goods. During the Renaissance people began using coins to buy goods which created a money economy
They were mostly Republican foes of President Wilson, who believed that the League of Nations was just a British fabrication to protect its empire. Because of the opposing factions in the Senate, they could not come to an agreement, and because they could not come to an agreement the United States did not sign the Treaty of Versailles or join the League of Nations.
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Lack of food, lack of shelter, in summer mosquitos, and the marsh/swamp stopped them growing crops
