I believe the answer is D
So sorry if its wrong but im pretty sure its right
The united states had ties to many other economies in the world, when the U.S economy collapses in 1929, the world is sent into the depression, which Hitler used to his advantage, thus causing the raise of Fascism in the 30's thus resulting in WW2. Unemployment rates skyrocketed when the unemployment occured, banks failed, etc.
The American party
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I'm afraid I couldn't give you a complete answer, or the answer that you're looking for, for this question regarding the Native-born Americans in 1860's since there is no map provided with this question. Try re-posting this question with the map on it.
They faced smallpox, low supplies, little to no food, and the bitter cold.<span />