How many slaves achieved freedom in colonial america?

Few slaves

Explanation:

Most (practically all) slaves were freed only after the war of secession, when the northern states defeated the southern slave slaves and through abolitionist president Abraham Lincoln ordered the slaves to be freed, as one result of the Confederate defeat. Before the end of the civil war, the number of freed slaves was very small and in the south of the country this number was basically negligible. For this reason, we can conclude that the number of slaves who achieved freedom in colonial America was very small, so the correct answer to your question is "Few slaves".