Ahistorian would like to assess the historical contingency between many factors that may or may not have contributed to the south's decision to secede from the union before the civil war. which of the following actions would he take to best apply this historical thinking skill?

analyze conversations between southern leaders to determine which arguments for secession they used.

connect the popular southern ideology of secession with similar historical ideas during different eras.

create a thesis arguing in favor of a particular interpretation of the civil war's causes.

compare the factors leading up to the civil war with factors that caused other major crises in american history.