Spanish American war was mostly isolated to the Western hemisphere (although the US gained colonial possessions after).
It took forever to join WW1 due to the small size of the US standing military. Same with WW2.
It wasn’t until after WW2 the US was able to project power globally and through that, set the global power structure with the USSR.
"The US was quite isolationist up until the end of WW2"
Being involved in these wars, regardless of entry time, is on no way "quite isolationist'
Spanish American war was mostly isolated to the Western hemisphere (although the US gained colonial possessions after).
It took forever to join WW1 due to the small size of the US standing military. Same with WW2.
It wasn’t until after WW2 the US was able to project power globally and through that, set the global power structure with the USSR.