Why was western traffic in need of improvement? to handle the frontier movement to provide inland roads for troops to open the area for government investments the roads had been heavily abused from travel

The correct answer is A) to handle the frontier movement.

Western traffic needed improvement to handle the frontier movement.

There were many trade and social activities in the Western frontier that it was necessary to implement changes to control the frontier movement of people. Better roads, more surveillance posts, and the railroad would improve the traffic in the zone.