Because they were looking for a new start and they needed new land and resources.
Lets eliminate
A. organ transplant:
this was debated maybe 200 years ago (give or tak) and is no longer an issue
B. genetic engineerign
this is kind of debated becuase some scientists are trying to make life and that has to do with ethics because they would be playing god
C. space exploration
not debatable
D. prosthetics
we already have this and tis i not debatable
answer is B
About as much as 60% of the indentured servants would die before being able to complete their contracts (which was often of 5 years). Although at first, some men were still able to claim some land after the years of work, in the 1660s, most of the good land was already claimed by large land owners. After Bacon's Rebellion in 1676, planters decided to stick with slavery instead of using the system that allowed them to abuse workers and become rich (by using a system that abused a person during that person's whole lifespan).