what is unique about the headquarters of the United Nations ? A. Keeping the world free from undemocratic rulers. B. improved health around the world. Assisting children in need . D bringing literacy to all people​

The service industry in the united states grew in the late 1800s. what was one effect of that growth? the number of people with jobs in factories as unskilled workers decreased. the number of people with jobs in factories as unskilled workers increased. the middle class grew as people took jobs as clerks, lawyers, and teachers. the middle class shrank as people left jobs as clerks, lawyers, and teachers.