Interesting twist to the muxh harped on about question. I would think that generally we would be covertly hostile but outwardly friendly but respectful (scared!)- perhaps envious of their technology?
To which aliens are you referring? All?
If we managed to land humans on other planets and find a less advanced alien culture, then I am sure we would enslave them -just as Columbus did to the Meso-Americans and the British, French and Germans did to the native Africans. (My opinion at least)
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