What did carnegie do to ensure that his money would be used to society?
a. he contributed to medical research.
b. he built libraries that everyone could use.
c. he offered music appreciation classes for everyone.
d. he gave away money to homeless people.

The correct answer is B. He built libraries which everyone could use.

Andrew Carnegie was known for his work which he led American to the expansion of steel industry. He was among the richest people.

In both the British empire and united states he was a philanthropist. His first job was a telegrapher, whereby later he invested in railroad sleeping cars, bridges, oil derricks and railroad.

He gained his wealth when he started job as a bond salesman where he raised money for enterprise in america which is in Europe.

which time period is this? or is this story fictional, i'm going to need more info to answer this question

the industrial development of cities in the ruhr area in the nineteenth century is described. the research was based on english and german language sources. several factors that shaped growth and paths of the cities were categorized and analyzed. they are locations, resources, traditions, entrepreneurs, and technological developments. locations and resources were the most important among them; other factors may be regarded as consequences from locations and resources. among the cities, bochum, essen, gelsenkirchen, and dortmund had the richest resources and most favorable locations in the transportation network and grew to be the largest cities in the ruhr area near the end of the nineteenth century. riverside location was also a favorable factor for the development, as shown in the development of duisburg on the confluence of rhine and ruhr. resource distribution can explain the rise of textile industry, metallurgical industry, and coal and iron industries, and the northward progression of the mining industry. tradition was an important factor for cities such as krefeld, barmen, elberfeld, solingen, and remscheid, which experienced development based on their traditions through the nineteenth century. various entrepreneurs exerted influences within and beyond the local level over the ruhr area. technological development stimulated the northward progression of the mining industry and the deep connection between the coal and the iron industries.