Which of the following best summarizes the idea represented by this graph?

answer is b

Explanation:

texas governor sam houston opposed secession, but was unable to prevent it. in this speech, given prior to lincoln's election, he presents the argument that slavery would be safer within the united states than outside of it. it was a prescient argument, and one held by several other southern leaders.

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i truly dont know the answer wait i do its 1,3,4