Complex sentence: Built in 1873, Estey Hall is the oldest surviving building at Shaw, which is the oldest historically black college in the South and was the first institution of higher learning for freed slaves after the Civil War.
Split into simpler sentences: Built in 1873, Estey Hall is the oldest surviving building at Shaw. The school is the oldest historically black college in the South and was the first institution of higher learning for freed slaves after the Civil War.