Identify the man who traced the congo river to its source in 1877.

the answer would be a)henry grady because he came up with the term "new south"

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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