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.
It was one of the masterpieces that has been created by human beings which was a symbol of victory, liberalization and dignity.
There might be more but here is the answer I gave you
The unions main goal was to keep the country United
