I'm afraid that I'm very indecisive when it comes to altering the course of history within a story, so I figured it would be best if I sought out some input and opinions to get a better understanding of the times. And if there's anything in this post that needs to be addressed or fleshed out better, ask away. The point of divergence in my story is currently set in the autumn of 1829, where an interdimensional gateway opens up somewhere in the Appalachian Mountains between Virginia and Georgia. The alien refugees coming through it number over a hundred thousand and have taken everything that they could with them before permanently closing the portal behind them; they are essentially a city's population that uprooted its infrastructure and fled from an as-of-yet undecided global catastrophe. On a technological level, they are advanced enough to be roughly a century ahead of modern-day Earth, though their technology is in varying states of disrepair due to factors related to the aforementioned disaster, and most of their production lines have ground to a near-halt in the wake of their hasty relocation. In other words, the aliens are basically in the same general situation as the town of Grantville from Eric Flint's 1632 - they have a lot of shiny beat-up advanced technology being put to good use, but they certainly won't be capable of conquering the world or gracing the world with their idea of enlightenment. Their first order of business is basically to work out survival in their new world and bring relative stability back into their lives. Their relationship with mankind would largely depend on how mankind chooses to interact with them. My question is, how would America and the world in general from the 1830s onward react to what is pretty much a mass exodus of advanced aliens of multiple species ranging from lizard people, to a species that's a humanoid blend of wolf/bird/kangaroo, to bioluminescent avian/insectoid dragons, etc.? What sort of actions do you think the American people of the early-to-mid 19th century would take when you suddenly throw a large alien settlement into Andrew Jackson's backyard, who have effectively trapped themselves on Earth for better or worse?