What was the unforeseen impact of forcing Africans to fight on behalf of their colonizers in World War 2?

Agitation for Independence

Explanation:

When Africans fought on behalf of their colonial overlords (mainly Britain and France), they were told that they were fighting for freedom from Nazi imperialism which was ironic because they were under subjugation by the imperialist powers of Europe as well.

When the Nazis were defeated therefore, Africans in the same vein began to agitate for the same freedom that Europeans had won from Nazi Germany for their selves as well.

Furthermore, fighting in a war dominated by white people who treated everyone else as beneath them, stroked a sense of African nationalism in the Africans fighting as they wanted to be seen as equal in their own countries.

Africans also saw that their invisible colonial overlords could actually be defeated in war and so did not fear them as much anymore.

All these and more culminated in African agitation for independence and within 20 years of the war ending, most of Africa was independent.

the answer to your question is:

strong-mayor system

they made rome the dominant power in the mediterranean.