Why was the army generally used in colonization?

Correct answer: For control and suppressing revolts

In a colonial system, the army was commonly used to establish authority, protect the occupying power's administration, and respond to resistance. Military force could help conquer territory, guard trade routes and resources, collect taxes, and suppress revolts. This does not mean that every colonial action was military, but armed power was an important support for colonial control. Therefore, option C gives the relevant purpose. Art competitions, language festivals, and teaching farming are not the general reason an army was deployed in colonization.

The key phrase is control and suppressing revolts. A colonial power often ruled people who had not freely chosen its government, so it used soldiers when local opposition threatened its authority. The army could also intimidate communities and enforce policies, although colonial rule sometimes used administration, law, or alliances as well. Option C is broad enough to describe the military function, while the other choices are unrelated activities. The supplied answer C is consistent with the historical concept.