What is the primary reason that explains why the democrats and republicans have endured as the two major political parties?

The main reason that explains why the democrats and republicans have endured as the two main political parties the existence of single member election districts. This has led to a situation whereby the winner takes all given that each area is divided into a number of physically defined voting districts that are represented by a single person

in this way, as a created nation, france will probably use socio-economic reasons   at times do not take into account national economic, cultural, and social differences in protected industries. losing sovereignty, national independence.

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answer: alexander hamilton

explanation: alexander hamilton was george washington's right hand man. he took an early role in the militia as the american revolutionary war began. in 1777, he became a senior aide to general washington in running the new continental army.