Complex sentence: NSU Motorenwerke AG (normally just NSU) was a German manufacturer of cars and motorcycles which was founded in 1873, and was acquired by Volkswagen Group in 1969.
Split into simpler sentences: NSU Motorenwerke AG, (normally just NSU), was a German manufacturer of cars and motorcycles, which was founded in 1873. It was acquired by Volkswagen Group in 1969.