Native tribes like the Cheyenne and Sout, Buffalo herds freely roamed the Plains, Buffalo herds imped travel by ral, Native Americans attack white settlers, Buffalo hunters are hired to kill the buffalo, Buffalo are hurted to within an inch of extinction.
The railroads lacked the necessary capital to build the rails. The buffalo hunters paid the railroad to transport the buffalo hides.
The sale of buffalo hides contributed to the cost of constructing the railroads.
Thus, F, A, D, B, E, C are the correct order.
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