Complex sentence: In late June 1794, the federal government signed yet another treaty with the Cherokee, the Treaty of Philadelphia, which essentially reaffirmed the land cessions of the 1785 Treaty of Hopwell and the 1791 Treaty of Holston.
Split into simpler sentences: In late June 1794, the federal government the Treaty of Philadelphia with the Cherokee. It reaffirmed their land cessions of the 1785 Treaty of Hopwell and the 1791 Treaty of Holston.