I like your list.
I will add that they only exterminated the natives when necessary. Most other cultures would have gone and solved the problem permanently. The USA went for forced relocation on an on going basis rather than extermination.
I will also add that the USA really rose to power after the WWII smashed up everyone else.
Forced re-location resulted in mass deaths, so the result was the same (and I am ok with that) because if we had not cleared the continent of them for the most part... we would now be in a south/central american situation at best or a south africa type situation at worse.
In the end, it was either us or them. And it may seem heartless but in that situation I will choose us every time.
Unlike most, I see man as he is, not as how I would prefer him to be. And I have no doubt that given the chance any other people or race would have wiped white Europeans off the face of the earth and taken everything they have.
“...the USA really rose to power after the WWII smashed up everyone else.”
The world’s industrial numbers were overwhelmingly American by 1871. We were just the quiet guy in the bar while all the noisy dwarves bragged and squabbled.
Correction - We became a world power by smashing everyone else. The Army Air Force blasted Germany and Japan to rubble. The two atomic bombs only did 3% of the damage to Japan.