Answer:The northern economy relied on manufacturing and the agricultural southern economy depended on the production of cotton. The desire of southerners for unpaid workers to pick the valuable cotton strengthened their need for slavery.
Explanation:
Interviews are in person, therefore there may be interviewer and interviewee bias in regard to the questions being asked. Only so many interviews can take place during any given period of time. Surveys eliminate interviewer and interviewee biases. And surveys can reach a large majority of people. However, surveys are only good if they are actually returned.
Hope this helps! :)
Maybe congress, either that or maybr the beanches like legislative executive judicial?
