What kind of information does a secondary source give us?

What would lead a historian to consider two events to have a relationship of correlation rather than causation

How did southern states respond to the ratification of the fourteenth amendment?

Question 1 of 10 2 points which phrase best describes an event's "historical context? " o a. the social or political setting in which it occurred b. the total number of people it affected o c. the unfair interpretations people have made about it o d. the different views people hold about it