The first-past-the-post electoral system explains a. why the united states has only two major parties b. why republicans have conservative candidates c. why democrats have liberal candidates d. why the united states has coalition governments

A) why the United States has only two major parties

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-Payshence

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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