The state and Local governments responded positively to the expansion of railroads.
These governments used the presence of the railroads in their regions as a way to promote trade and transportation in the areas. They helped by granting lands to railroad companies.
The railroads contributed to development by bringing in much settlers to the area and also opening it up to trade.
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I believe the answer is January 15, 1775
At that time, record sales, radio airplay and jukebox pick where the 3 ways of media diffusion for musicians. People would normally listen to music according to one of these 3 platforms according to their lifestyle and economic position. It is also known that certain music genres could be associated to one or another platform. Therefore, limiting the quantification of reproductions to only one platform would create a bias that would produce a distortion in the information presented.
