D. African Americans had to compete with new immigrants for low-paying factory jobs.
Explanation:
When slaves were emancipated, many moved North. This move was appealing because they believed they were likely to face less discrimination in the North. It was also motivated by the fact that the North had more factories and various industries that could provide employment for the emancipated slaves. However, at the same time, many immigrants were arriving to the United States and settling in the North, which meant that African Americans had to compete with new immigrants for low-paying factory jobs.
