In general, this movement had a negative impact since lots of the expansion involved moving into territories that were controlled by European nations. Although most of the time physical conflict was avoided.
Well, Louis Pasteur was a scientist who discovered a process called "pasteurization." What this process is is heating food or whatever liquids to kill the bacteria which might be in it. This process became widely used for milk, as well as for vaccines. It improved food safety for the public and provided for a way that people can get vaccinated so that their immune systems are resistant to disease. So from my knowledge, I would say "<span>better standards for public health" is your answer.
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Just put a name of one of the songs then say how it relates
