Which statement about the effects of the gold rush are correct? a. the old ruling families of the californios had a strong say in the constitutional convention of california. b. californios were able to establish legal ownership of their property in u. s. courts without the original land grant documents. c. nearly two-thirds of the native american population of california died during the gold rush. d. chinese laborers were welcomed and given higher-paying jobs in the mines because of their strong work ethic.