What hypothesis might you form based on the fact that a primitive language has never been discovered

I'd assume as there is no evidence of a primitive language, there wasn't one and/or they only communicated verbally and had no writing system.

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.