nialists, but also must fight against the slave owner. The war of independence did not solve the problem of slavery, but exacerbated the problem of racial discrimination . In1787, the bourgeoisie and the slave owners had a constitutional meeting. The convention was made in secret, it did not appear "Slave" two words in the content ,but acknowledged that slavery. Black slaves were regarded as things a mong the things and people; they could not reach the last trick . America Negro slavery is irony to American democra tic, slavery wa s legal in the thirteen colonies in North A merica. In the 1780s, American slaves accounted for 1/7 of the population. At that time, the bourgeois democracy thought politicians suspected the rationality of existence of slavery in the United States, but from other