By keeping wages low and taxes high. hope this helps.
Answer:
Cattle trails were slowly replaced by the rail roads
Explanation:
Cattle trails were slowly replaced by the rail roads. The rail roads spread to most part of the West in late 1800s which then replaced or reduced the usage of cattle trails to its minimum specially the long cattle drives. The Long cattle drives were replaced by the local trails on rail roads.
The 9th Amendment is the answer
