To identify which slaves had been purchased, slavers would do what to the slaves? A. Put a tattoo on them
B. (blank for some reason)
C. Cut off their ears
D. placed a identifying chain around their necks

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.