Complex sentence: The textile workers' strike of 1934 was the largest strike in United States history at the time, involving 400,000 textile workers from New England, the Mid-Atlantic states and all over the southeastern United States and lasted twenty-two days.
Split into simpler sentences: The textile workers' strike of 1934 was the largest general strike action in United States history at its time. It involved textile workers from all over the southeastern United States and lasted twenty-two days.