Which factor most contributed to delays in construction for the Central Pacific Railroad? a shortage of supplies intense summer heat long stretches of desolate landscape conflicts with American Indians

Explanation:

One of the factors that contributed to delays in construction for the Central Pacific railroad was "long stretches of desolate landscape, far from supply towns," since ironically it was only the railroads that were able to get these supplies to their destination quickly enough.

I'm pretty sure on edge nuity it's A. a shortage of supplies

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