Complex sentence: The East Texas Oil Field's discovery sparked a boom in production that sent prices plummeting; after a lengthy battle, the Railroad Commission won the right to limit the production of oil to keep the price of oil from falling too low.
Split into simpler sentences: The East Texas oil field's discovery sparked a boom in production that sent prices plummeting. After a lengthy battle, the Railroad Commission won the right to limit the production of oil to keep the price of oil from falling too low.