Complex sentence: A fishing village began growing in the area when in 1917, an American company built a floating platform to catch tuna and ten years later founded Compañía de Productos Marinos S.A., the plant lasted several years in operation.
Split into simpler sentences: A fishing village began growing in the area when in 1917. An American company built a floating platform to catch tuna, and ten years later founded Compañía de Productos Marinos S.A. The plant lasted several years in operation.