Which amendment required that the president and the vice president be chosen separately?

The 12th amendment requires separate ballots for vp, pres, and senator

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.