In two or three sentences, describe the connection between the development of steel and the development of railroads.

Railroads used the iron to build railroad tracks but iron was weak and also dangerous. Soon people then realized that steel was a better material for tracks because it was able to hold more weight which then allowed heavier cargo. Railroads also transported mineral needed to forge steel.

Steel was a better material for tracks ... Railroads also transported the minerals needed to forge steel.