What was a negative result of the Louisiana Purchase?

two months after his defeat of napoleon bonaparte's colonial forces, jean-jacques dessalines proclaims the independence of saint-domingue, renaming it haiti after its original arawak name. in 1791, a slave revolt erupted on the french colony, and toussaint-louverture, a former slave, took control of the rebels.

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.