Complex sentence: The phosphates are transported to the coast by an automated conveyor belt, the longest such belt in the world, and during the Western Sahara War the Front Polisario vandalized and disabled this transportation system several times.
Split into simpler sentences: The phosphates are transported to the coast by an automated conveyor belt, the longest such belt in the world. During the Western Sahara War the Polisario vandalized and disabled this transportation system several times.