original: As demand for coal slipped following World War II, mines began to close across the region, causing mass unemployment.
simplifications: As demand for coal slipped following World War II, mines began to close, causing mass unemployment. When demand for coal slowed after World War II, mines began to close, causing unemployment. Mass unemployment was caused by the coal mines shutting down after WWII. Demand for coal slipped following World War II. Mines closed across the region. It caused mass unemployment. As demand for coal fell after World War II, the region's mines began to close. This left many people without jobs. Demand for coal went down after World War II. Mines began to close across the area, causing mass unemployment. Coal mines began to close after World War II, causing mass unemployment. Demand for coal fell after World War II. Because of this mines shut down across the region causing unemployment to many. As need for coal dropped after WW II, mines began to close across the area, causing loss of a lot of jobs. Demand for coal slipped following World War II. Mines began to close across the region. This caused mass unemployment.