How did europeans change the nature of african slavery

The Europeans increased the slave rate. after settling into the 13 colonies and earning the title 'colonists', the indentured servants(indentured servants are the poor people that signed a contract to pay for a trip to America, or if they were imprisioned) rebelled, and claimed that they were pushed into false promises of a new, better, life. The high class colonists decided that instead of free temporary help, they could pay once for a lifetime worth of slave labor. So, in conclusion, they increased slavery by a lot, creating a big ordeal.