Complex sentence: Reverend Freeborn Garrettson who had freed his own slaves in 1775, began to preach in Delaware; he was among many Methodist and Baptist ministers after the American Revolutionary War who encouraged slaveholders to emancipate their people.
Split into simpler sentences: Reverend Freeborn Garrettson who had freed his own slaves in 1775, began to preach in Delaware. He was among many Methodist and Baptist ministers after the American Revolutionary War who encouraged slaveholders to emancipate their people.