Complex sentence: All American Aviation Inc was an airline company founded by du Pont family brothers Richard C. du Pont and Alexis Felix du Pont, Jr. in 1937 that pioneered an experimental airmail pickup service with routes radiating from a hub at Pittsburgh, Pennsylvania.
Split into simpler sentences: All American Aviation Inc was an airline company founded by du Pont family brothers Richard C. du Pont and Alexis Felix du Pont, Jr. in 1937. It pioneered an experimental airmail pickup service with routes radiating from a hub at Pittsburgh, Pennsylvania.