In addition to fighting in the army how did Europeans colonies contribute to the war effort?

The uneven division of the colonies led to war.

Explanation:

The beginning of the 20th century was accompanied by European countries' efforts to acquire as many colonies as possible. France and Great Britain led the way in the colonization of the world. The German Empire and Austro-Hungary wanted a part for themselves. France and Great Britain were not interested in the possible division of the colonies; they were satisfied with the state of dominance in terms of colonization. In such circumstances, nationalism is strengthening on all sides. War rhetoric is being created among those countries, which leads to the strengthening of nationalist propaganda. The uneven division of colonies among European countries was the main factor that led to the First World War. The assassination of Prince Franz Ferdinand in Sarajevo in 1914 was just a pretext for starting the war.

separate but equal was a legal doctrine in united states constitutional law according to which racial segregation did not violate the fourteenth amendment to the united states constitution, which guaranteed "equal protection" under the law to all people. under the doctrine, as long as the facilities provided to each race were equal, state and local governments could require that services, facilities, public accommodations, housing, medical care, education, employment, and transportation be segregated by race, which was already the case throughout the states of the former confederacy. the phrase was derived from a louisiana law of 1890, although the law actually used the phrase "equal but separate

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the 22nd united states congress