Complex sentence: Meanwhile, Republic Steel decided to leave the city and build its dock in Lorain while Standard Oil of Ohio canceled plans for a new headquarters to be built behind the Terminal Tower (fortunately, they would later return under the administration of George V. Voinovich).
Split into simpler sentences: Meanwhile, Republic Steel decided to leave the city and build its dock in Lorain. Also, Standard Oil of Ohio canceled plans for a new headquarters to be built behind the Terminal Tower (fortunately, they would later return under the administration of George V. Voinovich).