Answer:
4. They were forced to move to the frontier and work on isolated plantations.
Explanation:
From the year 1830s to the 1850s, the younger ones of the wealthy planters were forced to go to the frontiers, live in rough quarters, and also work on isolated farmlands. This is the common way of life in those days. In most cases, the wealthy planters want their sons to be hardworking and independent. The correct answer is option 4.