In which region was almost every country colonized by an imperial power in the Th century?

In the 19th century, nearly every country in Africa was colonized by various imperial powers. European nations, including Britain, France, Germany, and Belgium, expanded their empires through a scramble for Africa, leading to widespread colonization. This period saw the imposition of foreign rule, exploitation of resources, and significant cultural changes across the continent. The effects of this colonization are still felt in many African nations today.