They are in eastern and Central Europe.
The answer is B, Jacob Riis.
Jacob Riis is most known for his pictures of an impoverished New York City, and worked for better living conditions in those areas.
Nativism contributed to the Act as the Chinese were considered a threat to the economic well-being of the natives. The Chinese were stereotyped as degraded, dangerous, and competitors for jobs and wages. The passage of the act characterized the outcome of years of racial hostility
The correct answer is D) They built windmills and plows
