Was John Rolfe responsible for the indentured servant system?

No, John Rolfe was not responsible for the indentured servant system. The system of indentured servitude in the American colonies predates Rolfe's arrival and was already in place as a means to address labor shortages. However, Rolfe's successful cultivation of tobacco in Virginia in the early 1600s did increase the demand for labor, which in turn contributed to the expansion of the indentured servant system as a way to meet that demand.