What was the traportation in the olden days till the 1900s?

It depends on where at. In 1885 the first engine mobile came out but beforehand there were canals, coaches, horses, in some places trains, and walking of course. 

In 1800, the only practical way to travel and trade across long distances was along the nation’s natural waterways. As a result, settlement clung to the nation’s coasts and rivers. A few roads connected major cities, but travel on them was difficult and time consuming.

One hundred years later, railroads sped along thousands of miles of track. Large ships moved passengers and freight across the oceans and smaller boats plied the nation’s rivers, lakes and canals. Bicycles, carriages and wagons rolled over thousands of miles of roads. Seventy-five million people lived coast to coast, many in towns and cities that had sprouted up along the new routes.

The answer is b biology