Complex sentence: The park was a pioneering model in the 20th century for the sprawling research centers based in suburban corridors, as it covers 7,000 acres of land and 22.5 million square feet.
Split into simpler sentences: The park was a pioneering model in the 20th century for the sprawling research centers based in suburban corridors. It presently covers 7,000 acres of land and 22.5 million square feet.