Complex sentence: Moses Brown (1738--1836) was a member of the Brown family, a powerful mercantile family of New England, a co-founder of Brown University, and a New England abolitionist and industrialist.
Split into simpler sentences: Moses Brown (1738--1836) was a member of the Brown family, a powerful mercantile family of New England. Co-founder of Brown University, a New England abolitionist and industrialist.