Complex sentence: From 1965 to 1999 the unit housed the male death row; however, numerous escapes from the unit led the TDCJ to relocate death row to the maximum-security Polunsky Unit in Polk County, Texas.
Split into simpler sentences: From 1965 to 1999 the unit housed the male death row. In 1999 the male death row was relocated to the Polunsky Unit in Polk County, Texas.