Complex sentence: The Green River Ordnance Plant, also known as the Green River Arsenal, is a large munitions factory complex between Dixon and Amboy in Lee County, Illinois that was hastily constructed in 1942 and just as quickly shut down in 1945.
Split into simpler sentences: The Green River Ordnance Plant, also known as the Green River Arsenal, is a large munitions factory complex between Dixon and Amboy in Lee County, Illinois. It was rapidly constructed in 1942 and just as quickly shut down in 1945.