The development of medieval european cities was marked by improvements in health and safety practices. true or false

Technically speaking, no, it is not true that the development of medieval European cities was marked by improvements in health and safety practices, since these practices tended not to arise until the Renaissance. 

Political forces often influence public opinion.

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.