B George F.Kennan. You're welcome!
It is true that President Lincoln thought his speech was a failure.
Many great European powers had been exploiting China's weak economic system to enforce their own trade regulations for years. The United States simply wanted to join the fray, so the Open Door notes were sent to the European powers basically stating, "Hey, you guys can't own all of China, make sure that all countries get to trade equally with them."
Just as a side note, the Open Door policy with China was extremely hypocritical for the United States, as the Monroe Doctrine of 1823 basically stated that none of the European powers could interfere with the Western Hemisphere... While no one was allowed to touch the Americas, the United States was apparently allowed to mess with the rest of the world.
Answer: The Revolution's most important long-term economic consequence was the end of mercantilism. ... The Revolution opened new markets and new trade relationships. The Americans' victory also opened the western territories for invasion and settlement, which created new domestic markets.
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