There are a number of things that made the steel an important industry. This was mainly due to the various uses of steel and the industry boosted most economies.
steel needed for railroad
He made a steel industry
Andrew Carnegie
the steel industry --Bear
steel
railroads helped transport steel to other places
Steel and iron are known as the backbone of modern industry because:1. Almost everything is made of steel or iron, or has been made with tools and machinery off these metal.2. Ships, trains, trucks and autos are made largely of steel or iron. Even the safety pin are made from steel or iron.3. Minerals are mined with steel or iron equipments.4. Large buildings have steel or iron framework.5. Oil wells are drilled with steel or iron machinery.
The expansion of the American steel industry and railroads during the civil war was made possible by Andrew Carnegie. Mr. Carnegie was a Scottish American industrialists who is known for leading the steel industry expansion.
The railroad industry grew because the reduced price of steel made it cheaper to build railroads.
They provide jobs for steelworkers and steel for a myriad of businesses. As Pakistan's steel industry grows, they can rely less on imported, foreign steel.
Andrew Carnegie
Steel which is really important for them and oil i think?