Complex sentence: In 1871 the Maryland General Assembly bought land in Hagerstown, Maryland, from the newly-established (1865) Rose Hill Cemetery and created the Washington Confederate Cemetery within the larger public cemetery.
Split into simpler sentences: In 1871 the Maryland General Assembly bought land in Hagerstown, Maryland, from the newly-established (1865) Rose Hill Cemetery. With this land, the Assembly created the Washington Confederate Cemetery as part of the larger public cemetery.