100 years seems like an arbitrary cutoff, and we sure as hell "antagonized" Mexico on our way to becoming a superpower not that much earlier than that by... Taking half their territory.
Canada has almost always been a virtual non-entity due to things like their incredible population sparsity and longitudinal cultural/economic integration with regions of the US. They are a counterexample, but the pattern very much points in my direction IMO.
On top of that, we're talking about _becoming_ a superpower, not being one. Once you're already a superpower, your neighbors often become varying degrees of vassal, which is why Mexico and Canada are among our closest allies. You're hardly a superpower if you haven't neutralized your neighbors (diplomatically or otherwise). Look at the blood feuds over tiny bits of land in the rest of the world, and consider how cool Mexico seemingly is with their land's massive, unprovoked conquest. They accepted it (and their good relationship with us) because they didn't have a better choice.
How many superpowers can you think of that didn't antagonize their neighbors, especially on their way to becoming one? Rome? Persia? Britain? Russia?
It's technically (just) more than 100 years, but the Zimmerman Telegram (https://en.wikipedia.org/wiki/Zimmermann_Telegram) is not something your (potential) enemy sends to one of your "closest allies".
The line of 100 years just misses the US occupation of Veracruz and the Zimmerman Telegram (or the Mexican Revolution in general), which was one of the lowest points of US-Mexico relations. US-Canada relations were pretty testy in the pre-WWI era as well, and the declassification of War Plan Red [1] did cause a brief stir.
Then again, the US has antagonized many countries simply by electing Donald Trump.
[1] In the inter-war period, the US military used a series of color classification schemes to sketch out what the US response to wars with various countries would look like. Red was Britain. And in event of war with the UK, the US plan was to invade Canada, irrespective of Canada declaring neutrality (which was Canada's plan in such a scenario).
Which countries has it antagonized? China? Canada and Mexico have signed onto the USMCA. Japan and India's leaders both seem to adore Trump. Watching Trump at the U.N. two weeks ago, he seemed to be a very capable diplomat and seems to have good relations with most nations.
Canada and Mexico signed the USMCA not so much because they felt it was better than NAFTA but because they didn't want Trump to do any worse. And it's not like Canada is happy about Trump's emergency steel tariffs that hit Canada's exports--the fact that USMCA would cause Trump to lift them was one of they reasons to sign it, and Trump certainly was in no rush to lift them afterwords.
Not to mention there's lots of dislike towards Trump's tendency to rip up treaties just because Obama signed them--Vietnam wasn't happy about Trump dropping TPP, Europe was not a fan of him leaving the Paris climate treaty or the Iran nuclear treaty, etc.
Canada has almost always been a virtual non-entity due to things like their incredible population sparsity and longitudinal cultural/economic integration with regions of the US. They are a counterexample, but the pattern very much points in my direction IMO.
On top of that, we're talking about _becoming_ a superpower, not being one. Once you're already a superpower, your neighbors often become varying degrees of vassal, which is why Mexico and Canada are among our closest allies. You're hardly a superpower if you haven't neutralized your neighbors (diplomatically or otherwise). Look at the blood feuds over tiny bits of land in the rest of the world, and consider how cool Mexico seemingly is with their land's massive, unprovoked conquest. They accepted it (and their good relationship with us) because they didn't have a better choice.
How many superpowers can you think of that didn't antagonize their neighbors, especially on their way to becoming one? Rome? Persia? Britain? Russia?