The county unit system was eventually declared invalid because
a) people should not have to vote in the county where they reside.
b) under the system african americans controlled most votes.
c) every person’s vote should be given equal weight.
d) the federal government became involved.

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

equal area projections

equal-area projection. a projection in which regions on the earth's surface that are of equal area are represented as equal.