For me, that the Cold War began with the US wanting to stop Stalin's plans of imposing communism on the world. Did anybody else's curriculum portray Trotsky in a positive light? lmao it's funny to imagine the weirdos who write those textbooks were trots.
A few things come to mind:
That the early settlers of the Americas were doing so because they just loved freedom so gosh-darned much, rather than companies trying to make a buck
That the USA fought the Nazis because we are "good" and they are "evil", rather than they let Pearl Harbor happen so they could fight Japan over imperial "rights" in the south pacific and only declared war on Germany after Hitler declared war on the US
And just the whole way of teaching of history as a linear flow of progress