Answer:
It was the end of the First American political order
Explanation:
The Federalists and Democratic-Republican Parties had collapsed and was replaced by the second political order of the Whigs and Democrats
The reason why people take an oath to support the Constitution instead of the country or the President is because the Constitution is the supreme law of the land, have has power even over the present himself. It is not required that every American take this oath--it is a personal choice. <span />
I believe it was the Chinese, because at that time southeastern China had a poor economy.