After the secession of South Carolina in late December 1860, for a brief period New York city's governing body, the Common Council, considered secession to become an independent city state. Pro-independence position was because as an independent city state, similiar to the northern German port cities, New York could keep to itself the tax revenue of $56 million- tariffs on imported goods collected at ports- as two thirds of imports by value passed through New York. The state's merchant class was pro-south, especially as most of the cotton exports passed through New York. New York made 40 cents on every dollar that Europeans paid for cotton from the South. The money came from warehouse fees, shipping, insurance and profits. Cotton helped build most of the mercantile buildings in lower Manhattan and rows of upscale brownstones. Wall street businessmen and The New York Herald newspaper opposed Lincoln's election. The New York Daily News was edited by the mayor's brother, Benjamin Wood, and it warned working class whites about competing with emancipated black labor. New York financiers even threatened to stop buying federal bonds. At which point Horace Greeley, pro-Union publisher of the New York Tribune, urged the Treasury to sell bonds directly to individuals. What changed all this was the firing of the cannon at Fort Sumter on April 12, 1861. Hundreds of thousands of New Yorkers gathered in a patriotic rally in Union Square on April 20. New York quickly declared its support for the Union alongside other Northern states that April. ...