This period ended with the death of Loyola and the loss of their seven cities in AraucanÃ a. The War of Arauco continued but the Spanish were never able to recover their control in the AraucanÃ a , at the south of the River of BÃ o BÃ o. This period ended with Loyola 's death and the loss of all seven of their cities in AraucanÃ a. The Arauco War continued but the Spanish were never able to recover their prior control in AraucanÃ a south of the BÃ o BÃ o River .