Answer:
Cattle drives boomed during late 1800 because of the expansion of "Railroads and Ranching"
Explanation:
The two major industries "Railroad and ranching" helped in the booming of the western economy in late 1800.
Railroads brought cattle from Texas to Chicago for slaughter where they processed their meat and transported to New York in the refrigerated rails and other cities.
This entire process made this region a new Hub of the economy.
Railroads created the market for ranching.
Ranching is the breeding and herding of the cattle and these ranching hubs got flourished with the expansion of the railroads in the west.
