Foto de stock - Catalonia, Spain Sep 2017.Pertallada. On 1 October Catalans will go to the polls to vote in a referendum on whether to secede from Spain and form an independent republic. However Madrid says the referendum is unconstitutional. Catalonian flags & 'si' signs proliferate throughout the region.

Imagen: Catalonia, Spain Sep 2017.Pertallada. On 1 October Catalans will go to the polls to vote in a referendum on whether to secede from Spain and form an independent.