Final answer:
Richard Allen was the influential leader in early American Methodism besides Asbury founding the African Methodist Episcopal Church.
Step-by-step explanation:
The prominent leader in early American Methodism besides Asbury was Richard Allen. He greatly contributed to Methodism by founding the African Methodist Episcopal Church in the 1790s. For part b the young preacher from the West elected bishop in 1808 after delivering a powerful sermon at General Conference to support Asbury was not directly stated, and given the information provided, it isn't clear who this individual is.