What did harriet tubman do during the civil war

She worked for the army as a nurse, a cook and a spy

Ithink the answer is b, monopoly

The embargo act of 1807  was a law passed by the united state congress and signed by president thomas jefferson on december 22,  1807. it prohibited american ships from trading in all foreign ports. in 1806, france passed a law that prohibited trade between neutral parties, like the u.s., and britain.