How did the growth of the railroads affect supply and demand for natural resources in the united states? increased the supply decreased the demand increased the demand had no effect on the supply and demand

It increased the supply. It was now made possible to make things and quickly transport them across the entire United States of America which meant that it was possible to make more of it. As a result, many people didn't have to worry about things such as food anymore because it took a lot faster to get to them so they could buy instead of having to grow their own food.

The main reason South Asian agricultural growth ahs kept up with population growth. It originated during the 1960's in agricultural research stations established by international development agencies. By 1970's efforts to establish high-yield varieties of rice and wheat had reached their initial goals.

Explanation:

As a result South Asia was transformed from a region of chronic food deficiency to one of self-sufficiency. India more than doubled its annual grain production between 1970 and the mid 1990's.