; or (ii) a single language minority group represents 20 percent or more of the voting-age population on Indian lands located in whole or in part in the State or political subdivision; or (B) to convert one or more seats elected from a single-member district to one or more at-large seats or seats from a multi-member district in a State or political subdivision where— (i) two or more racial groups or language minority groups each represent 20 percent or more of the voting-age population in the State or political subdivision, respectively; or (ii) a single language minority group represents 20 percent or more of the voting-age population on Indian lands located in whole or in part in the State or political subdivision. (2) Changes to political subdivision boundaries Any change or series of changes within a year to the boundaries of a political subdivision that reduces by 3 or more percentage points the percentage of the political subdivision's voting-age population that is comprised of members of a single racial group or language minority group in the political subdivision where— (A) two or more racial groups or language minority groups each represent 20 percent or more of the political subdivision’s voting-age population