Complex sentence: By 1941, there were around 260 stands across the United States, though World War II created problems for Allen's chain due to shortages in product and employees, with multiple franchises going out of business.
Split into simpler sentences: By 1941, there were around 260 stands across the United States. Though World War II created problems for Allen's chain due to shortages in product and employees, with multiple franchises going out of business.