The response that best analyzes the results of changes in voting rights in the constitutions of 1788 and 1790 is: The changes allowed for a shift in power from the lowcountry to the backcountry.
This interpretation highlights the significant socio-political dynamics at play during that period, where changes in voting rights reflected larger shifts in power and representation within the region. The other options either mischaracterize the voting rights or inaccurately describe the implications of those changes.