Answer:
A renewed interest in trade and exploration occured.
Explanation:
The Europeans changed their worldview after they made increased progress in cartography (map making and map reading) by having a greater interest in making trades and explorations.
With increased progress in cartography, the Europeans were able to engage in more trading and exploration of other parts of the world.
The U.S government militarized the South because they wanted to oversee the election and registration of voters. Only after new state constitutions had been written and states had ratified the Fourteenth Amendment could these states rejoin the Union. Predictably, President Johnson vetoed the Reconstruction Acts, viewing them as both unnecessary and unconstitutional. Once again, Congress overrode Johnson’s vetoes, and by the end of 1870, all the southern states under military rule had ratified the Fourteenth Amendment and been restored to the Union.
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.