During his reign, Mobutu built a highly centralized state. He amassed a large personal fortune through economic exploitation and corruption. Because of this some people called his rule “kleptocracy.” The nation suffered from uncontrolled inflation, a large debt, and massive currency devaluations. By 1991 economic deterioration and unrest led him to agree to share power with opposition leaders. He used the army to stop this change. In May 1997 rebel forces, led by Laurent Kabila, removed him from the country.