1. What policy did Secretary of State John Hay advocate for all
nations in China, in September
of 1899?

It was The Open Door policy. The Open Door policy was a statement of principles initiated by the United States in 1899 and 1900. It called for protection of equal privileges for all countries trading with China and for the support of Chinese territorial and administrative integrity.

- "made the south's economy grow rapidly and a small effect that a lot of people don't know is that it made the more demand of slaves and cotton products. and also new states formed due to plantations growing in size."

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ayatollah khomeini can best be described as the leader who declared iran to be an islamic republic.