Final answer:
Manifest destiny led to conflicts with Native Americans, debates over the expansion of slavery, and conflicts with Mexico.
Step-by-step explanation:
As Americans followed the idea of manifest destiny, several problems emerged.
- Conflict with Native Americans: The expansion westward led to the displacement and mistreatment of Native American tribes. They were forced off their lands, leading to conflicts and violence.
- Expansion and Slavery: Manifest destiny contributed to the ongoing debate over the expansion of slavery. As new territories were acquired, the question of whether they would be free or slave states arose.
- Conflict with Mexico: The idea of manifest destiny was used to justify the Mexican-American War. This resulted in the acquisition of Mexican territory and raised concerns about the treatment of Mexican residents.