Complex sentence: After the war used his knowledge of airframe manufacture to develop a system of making fabric bodies for road vehicles and opened factories in Paris in 1921, London in 1923 and Indianapolis in 1928.
Split into simpler sentences: After the war used his knowledge of airframe manufacture to develop a system of making fabric bodies for road vehicles. He opened factories in Paris in 1921, London in 1923 and Indianapolis in 1928.