2) Where are the majority of the railroad tracks?

The majority of rail lines were found in those states which remained loyal to the national government. Most of these rails were four feet eight and one-half inches apart. By contrast, the South had only about one-third the mileage in the North and the gauges of the rails varied widely.

United States - 250,000 km. The US rail network, with an operating route length over 250,000 km, is the biggest in the world.

amazing what is with the caps?

Explanation: