How did the cotton gin lead to the spread of slavery?

Apsychologist has developed a series of personality inventories and wants to determine if they are valid. one of the scales measures perfectionism, so he asks a colleague for advice on how to establish the validity of this scale. the colleague tells him that if he were to find a sample of people with personality disorder, these people would obtain high scores on a scale that measures perfectionism.

Which researcher found american capitalism and the inequality of women to be at odds with the country's professed moral principles?

Who was the first female secretary of state?