How many years does a Justice serve on the
Supreme Court?

Supreme Court justices have life tenure, and so they serve until they die, resign, retire, or are impeached and removed from office. For the 106 non-incumbent justices, the average length of service was 6,203 days (16 years, 359 days).

answer; /// i believe that the correct answer is (d)the huang he river valley;

the indians crossed artificial boundaries, setting the stage for conflict