Which prominent rebel group operates in the mineral-rich eastern Democratic Republic of Congo, contributing to a major humanitarian crisis?

💡 Explanation:

The M23 Movement (March 23 Movement) is a major rebel group operating in the conflict-ridden, mineral-rich eastern regions of the Democratic Republic of Congo (DRC). The conflict in this area, often centered on control of resources, is a primary cause of one of the world's largest humanitarian crises, displacing over seven million people.