In the decades after the Civil War, cities in the United States grew at an incredible rate. In 1860, only nine cities had a population of more than 100,000. By 1880 that number had more than doubled to 20. Twenty years later in 1900, there were 38 cities with over 100,000 residents. By 1920, with 68 such cities, the country’s urban population exceeded that of rural areas for the first time in American history. New York City led the way with a population of nearly 3,500,000 in 1900, but other cities like Chicago weren’t far behind. Over a 40 year period, Chicago’s population grew from 100,000 to 1,700,000. This massive growth was driven by three factors: immigration, migration and industrialization

If the president needed to send two members of the cabinet to italy to negotiate a military treaty, the secretary of defense and the secretary of would most likely be sent.

Afull irb committee meeting is convened and one agenda item is a new research proposal to evaluate how mothers interact with their learning-disabled child. the inclusion criteria require the children to be a minimum of five years of age. the protocol requires the mother of the child to look at the child without any expression and not to talk to the child for three minutes. the committee determined that the mother's required task may upset the child. the irb approved the study with appropriate language in the parental permission form regarding the possibility that children might become upset. after the start of the study, the principal investigator reports to the irb that, as expected, one of the children became upset. the incident was handled according to the protocol and the child is fine. what should the irb do with regard to this report?

Wich characteristics make the long ballot ineffective