The marshall plan generated economic growth by injecting large amounts of funds into war-torn Europe, which had suffered great economic losses after the Second World War.
The Marshall plan generated economic growth by stimulating foreign demands for American products.
The Marshall Plan consisted on an American initiative passed in 1948 in an attempt to aid Western Europe, in which the United States gave over $12 billion (nearly $100 billion in 2016 US dollars) in economic assistance to help rebuild Western European economies after the end of World War II.
The United States aimed to rebuild war-torn regions, remove trade barriers, modernize industry, improve European prosperity, and prevent the spread of Communism.
I believe it was because the republicans did not want a large government and having a National Bank (I'm not sure if this is the bank you are talking about) would make the government even larger and they felt that it would take the power from the people.
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