Why did cowboy culture essentially become obsolete

During the winter of 1886-1887, thousands of cattle died when temperatures reached well below freezing in parts of the West. Many scholars believe that this devastating winter was the beginning of the end for the cowboy era. Cattle drives continued, but on a smaller scale, up until the mid-1900s

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.

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