Which factor most contributed to delays in construction for the central pacific railroad? a shortage of supplies that had to be shipped around south america intense summer heat that melted the railroad ties and tracks long stretches of desolate landscape, far from supply towns conflicts with american indians that closed down the tracks

the mongolian invasion of china and central asia resulted in a disruption of the silk road as the chinese garrisons lost support from the chinese kingdoms which fell under the mongols. however, as the mongols established a formal dynasty in china, the successors of genghis khan restored the garrisons along the silk road allowing the safe travel caravans again.

wheres the studying charts

explanation: