Yes nazis, allies, indians (both kinds, but one of those terms is pretty racist, so be careful with your terminology) and europeans. We wrote all along the watchtower and invented the first digital computer. There might be a few prickly edges around carthaginians, aztecs and other civilizations we eradicated. We hung on to trigonometry in spite of eradicating the babylonians.

In this case we means humans who are able to benefit from, or perhaps simply learn of, the discoveries of other humans.