Complex sentence: During the subsequent automobile boom in Argentina, the plaza facing the post office was made into a parking lot-though opposition to the 1979 sale of the parking lot for the construction of a local Bank of Tokyo headquarters proved insurmountable, and the plans were cancelled.
Split into simpler sentences: During the subsequent automobile boom in Argentina, the plaza facing the post office was made into a parking lot. Opposition to the 1979 sale of the parking lot for the construction of a local Bank of Tokyo headquarters proved insurmountable, and the plans were cancelled.