Question

In the ten years following the civil war, a large numbers of former slaves earned a living by becoming

1. Conductors on the underground railroad
2. Workers in Northern factories
3. Sharecroppers on Southern farms
4. Gold miners in California

Answer 1

In the ten years following the civil war, a large numbers of former slaves earned a living by becoming "3. Sharecroppers on Southern farms," since their opportunities for advancement were very slim, and moving to the North was often expensive.