I think it was free blacks, but I am not 100% sure
The eighteenth century saw a host of social, religious, and intellectual changes across the British Empire. While the Great Awakening emphasized vigorously emotional religiosity, the Enlightenment promoted the power of reason and scientific observation. Both movements had lasting impacts on the colonies.
Yes, most of the travelers on the Oregon Trail was young families. In the mid-19th century, the Oregon Trail was the main pathway for American emigrants searching for new lands and opportunity on the frontier, and most of the emigrants traveling were young families.