Railroads on the Railways required tracks for the trains to run on them these tracks earlier made up of iron for its heavy duty but soon enough realise that iron was not a very good option for tracks. Meaning drawbacks of using iron for example rusting is it was realised that Steel was a better option in making railroads.
Steel being made out of iron is heavy duty material yet it is not much prone to rusting. Just addition of certain minerals and carbon in iron steel forging is done making it heavy duty material.
Answer:
This cannot be correctly answered, as no one else was there scientifically. If you are religious, then the answer is apparent therefore.
Ancient cyanobacteria released oxygen which assisted in creating the atmosphere as we know it today.
Answer:
the population of united states is too large
He was also known by the nickname of the sun king. Btw this is the 100th question I have answered!
