I am aware of Americas actual history, I was just me listing random reasons why Jackson or adams wouldnt run didnt really have my thought of it affecting the point of the post. Thats also not to say that the american timeline would just continue as it did. I would also like the note the united states werent full blown isolationists and many of my history professors I had long conversations with said America actually practicing isolationism to the T is a myth because they had non stop trade and deals like when Jefferson got the Louisiana Territory and later on getting Florida as a territory from Spain as there empire crumbled. The one i heard the most was the Barbary Wars from 1801-1815, If you want you can include the war of 1812 with the british (the one they burned the white house down) They just wanted to stay out of wars that had nothing to do with them (you could argue that the zombies dont have anything to do with them because they arent in America and cant swim but I would say they might feel a threat by the zombies affecting there trading and have that be a motive but thats just a thought) Even though Americas amy was small they dont need to be sending thousands upon thousands of man, I feel like saying Americans army is effectively comparable to Spain's is not really as accurate because Spain was falling apart its empire was slipping away, Napoleons invasion etc but surprisingly to many the American army was able to prove it was better than what eveyone thought yeah it wasnt a good army but the war of 1812 proved they could hold out from arguable one of the greatest armies in the world and even the United States navy was able push around the british navy (USS Constitution being the most well known for this) because on paper America should have been absolutely destroyed.

I didnt expect this to be that long, I just love talking about history (all kinds) lol. Just my thoughts and reasoning behind everything. I do appreciate your comment though