Complex sentence: Following the American Revolution, Bartram's sons John Bartram, Jr. (1743--1812) and William Bartram (1739--1823), continued the international trade in plants and expanded the family's botanic garden and nursery business.
Split into simpler sentences: Following the American Revolution, Bartram's sons John Bartram, Jr. (1743--1812) and William Bartram (1739--1823), continued the international trade in plants. They expanded the family's botanic garden and nursery business.