The political part of this topic is very important but the reason that the republicans lost the war is simple the contribution of Germany and Italy were bigger and better than the soviets.No soviet airplane tank or rifle was superior to a german one and the German Italian contribution also included soldiers, 60 000 of Italy's best men went to fight in Spain this is one of the reasons why Italy wad problems later on in ww2.But on the political side the main error of the republicans was allowing Franco to return from the canaries to spanish morroco.
Muere lentamente quien no viaja,
quien no lee,
quien no escucha música,
quien no halla encanto en sà mismo.
Muere lentamente
quien destruye su amor propio;
quien no se deja ayudar.