Which Empire could have been found on 3 different continents? What continents were they? And why did their location allow them to grow so large and be so powerful?

The Roman Empire, at its largest, spanned through Europe, Africa, and Asia.

Explanation:

the answer lies in the political institutions that Rome developed early in its history. As Rome expanded its influence over more and more areas, its political institutions proved both resilient and adaptable, allowing it to incorporate diverse populations.

ghana achieved independence peacefully, while algeria gained independence through an armed struggle.

the passage of a strict fugitive slave law