What is the size and structure of Harrapan Civilization

The Harrapan Civilization's size is about a reach stretching to 900 miles, and their built structure is mud bricks that dry in the sun and hills that can be made with those bricks and walls, and their social structure is Gods that are superior like priests and academics, Kshatryia which holds kings and warriors of kind, Vaishya who are merchants who help sell and prob trade and owners that own land, and Sudra who are the citizens living there :3

Explanation:

:3

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.

small european communities with shared traditions consolidated into large new states (apex)