Trace the early origins of the alliance system that eventually contributed to the outbreak of world war 1

It would be the Alliances between France,Britain,And Russia, The Alliance between Britain and Belgium, Russia and Serbia, and Germany and the Austro-Hungran empire    

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.