Why do political parties most often try to gerrymander voting districts?

a- to gain a political advantage
b-to ensure an equal chance for all candidates
c-to prove they deserve the voters’ support
d- to keep each voting district the same shape

industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations. click to let others know, how is it

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