The Aryans are the ones who introduced the Caste System.
I believe the answer is C
In the United States, there are two major parties which are the Democratic and Republican parties. All of these are reasons why third parties have a difficult time winning except;
- Representatives run in single-member districts.
Single-member districts are those where a single officeholder vies for a seat. There are higher chances of such a candidate winning than in multi-member districts.
So, this does not account for why third parties have a difficult time winning.
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