 Complete the following phrase:  On January 11, 1959, Mari Brás founded the Pro-Independence Movement, which grouped Puerto Rican independence followers who supported the Socialist philosophy. Along with César Andreu Iglesias he founded the political newspaper Claridad, which he directed for three decades. On November 28, 1971, at the Pro-Independence Movements eighth general assembly, the Pro-Independence Movement officially became the Puerto Rican Socialist Party PSP. A political organization with Marxist-Leninist and nationalist leanings influenced by the 