Achievement of national unity was impeded by the desires of some Maures, mostly from the northern sections of the country, to unite with Morocco, and the countervailing wishes of many blacks to secede from Mauritania and join the Mali Federation. The defeat of the Mauritanian Entente and Babana by the Mauritanian Progressive Union in the elections of 1951 and 1956, which established the Mauritanian Progressive Union's dominance, led Babana and several of his followers in the summer of 1956 to flee to Morocco, where Babana became head of the National Council of Mauritanian Resistance. With the support of many Maures inside Mauritania, this group supported Morocco's claims to Mauritania and, by extension, Morocco's opposition to Mauritanian independence.[1]