PLS HELP FAST!! Mariano Vallejo
a.
spoke out in favor of more fair treatment of Mexican Americans and Native Americans.
b.
acted as an advisor to President Polk during the Mexican War.
c.
negotiated the Gadsden Purchase.
d.
urged Mexican settlers in the US to take the law into their own hands.

How is this a question? ?

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.