 Songs of conflict in Spanish have a very long history with elements to be found in the "fronterizos", songs concerning the Reconquest of Spain from the Moors in the 15th century.More immediately, some of the roots of nueva canción may be seen in the Mexican "corrido" which took on a strongly political flavour during the War of Independence c.1810, and then the Revolution after 1910.The modern nueva canción developed in the historical context of the "folklore boom" that occurred in Latin America in the 1950s.