Due to what conditions were slaves brought into brazil to work the fields?

Many slaves were brought to Brazil due to the sugar economy, which is the primary source of income in Brazil. They also used slaves when the Portuguese colonizers had discovered gold and diamond deposits in Brazil. Because of this, Portugal had sent slaves to work on the fields and mines under the Portuguese colony. 

i do not believe this was true indefiantly the native americans would have lsot aganist america one they didndt have the resources and allies that america had and 2   indians werent as advanced at the time as they were not 3 americans had the expreince because some of the soliders from other wars fought in that war and were attecked etc

because it’s really sad that’s why it’s in history native americans getting kicked out of their homeland.