Based on the passage, what was the role of colonial troops in World War 1?

A. Colonial troops were used as laborers in factories to make weapons.
B. Colonial troops served only as transport and ambulance drivers.
C. Colonial troops served as high-ranking officers who directed European soldiers on the front.
D. Colonial troops were used as a primary combat force.

"One looks at them and is silent. One would not speak to them. They are imposing and even frighten a bit.... Of course they are heading for the front line. This is their place, and their arrival means we are about to attack. They are made for attacking."
— French soldier Henri Barbusse describing Moroccan soldiers

Colonial troops in World War 1 served as a primary combat force, drafted from colonies like Africa and India to fight alongside European soldiers on the front lines.

Explanation:

Colonial troops in World War 1 served as a primary combat force for the imperial powers. They were drafted from colonies like Africa and India to fight alongside European soldiers on the front lines. These troops played a significant role in the war efforts, often suffering high casualties and facing challenging conditions.

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