How did African people help in World War 2?

Answer 1

Yes.

Italy used colonial troops in Africa. These troops were used to conquer countries in north East Africa in the years before the war. Italy eventually attacked British colonies that lead eventually to the Italians and Germans fighting the British in North Africa.

The country of South Africa was a British colony and had troops in the British Army. These Africa troops fought in Italy.

The French also had colonies in Moroco, Africa. These Moroccan troops were part of the French Expeditionary Forces that fought in Italy. The Morrocan troops known as "Goumiers" were fierce fighters. The French Expectionary Force lead the break through of the German lines around Cassino in May 1944.