Secretary of State John hay was an advocate of "<span>A. an open door with China" (also known as an "open door policy" since by this time China had become a powerful economic force. </span>
The Emancipation Proclamation was a wartime measure designed to destabilize the South. The proclamation granted freedom to all enslaved individuals in the states under Confederate control if they failed to return to the Union within 30 days. It also signaled that one of the outcomes of a potential Union victory would be the abolition of slavery.
Only the United States and Japan came out of the war in better financial shape than before.