Final answer:
Manifest Destiny caused conflicts in American society & politics through disputes over territorial expansion, economic disparities among states, and debates about immigration policies.
Step-by-step explanation:
The idea of Manifest Destiny caused conflicts in American society & politics for several reasons. Firstly, it led to disputes over territorial expansion, with Americans believing it was their destiny to expand across the continent. This resulted in conflicts with indigenous Native American tribes and Mexico. Secondly, manifest destiny created economic disparities among states as the need for more land and resources led to competition between states and regions. Finally, the idea prompted debates about immigration policies as Americans questioned who should be allowed to access the newly acquired territories.