In the simplest sense, positive means good or the opposite of negative. If you have a positive attitude about homework, for example, you're more likely to get positive feedback on your report card.
Answer: by mentioning the idea that women are not people
Explanation:
A citizen is a person in the United states and yet women were people in the United States but still could not vote. Susan Anthony is therefore asking if women were not people as well because only that would explain why they did not have the right to vote.
In saying this she connected with the emotions of women who in being made to feel like second-class citizens did not feel like they were people.