Why did enslaved africans make up the main labor force in the southern colonies?

Slaves were available free of cost.

Explanation:

The Africans formed the main labor force in the southern colonies. The main reason behind this was that they were available free of cost. The economy of South was based on agriculture and particularly on the plantation of cash crops such as sugarcane, tobacco and sugar. The cultivation of such crops required an intensive workforce. Therefore, the Southerners supported the slave trade and employed slaves on their plantation.

the correct answer is "c": the pillars proclaimed his regret at the bloodshed at the battle of kalinga and his conversion to buddhism.

the kalinga war is considered as one of the largest battles in the history of india. it was fought between the between the maurya empire, which ruled the lands of what is now known as india at the time, and the independent feudal kingdom of kalinga.

the army of maurya empire, led by its king ashoka, fought a prolonged war against kalinga. the war ended around 262 bce with the victory of the maurya empire. it is believed that ashoka, after having witnessed the loss of many lives during this war, felt deep responsibility and eventually converted into buddhism.