The freed all slaves in areas then "in rebellion against the united states."
a. twelfth amendment
b. gettysburg address
c. thirteenth amendment
d. emancipation proclamation

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explanation:

in november 1781, john hanson became the first president of the united states in congress assembled, under the articles of confederation. many people have argued that john hanson, and not george washington, was the first president of the united states, but this is not quite true.

explanation:

b. second continental congress