Complex sentence: Beside being an able engineer, Citroën was also a gambler, leading to the bankruptcy of his company, leading it to be taken over by the main creditor Michelin, who had provided tires for the cars.
Split into simpler sentences: Beside being an able engineer, Citroën was also a gambler, leading to the bankruptcy of his company. The company was taken over by the main creditor Michelin, who had provided tires for the cars.