@Merry Andrew,
They didn't know of the existence of Europe and, had they known, might not have had much interest in it.
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Well the old evil Europeans did no know ahead of time what they would find either and yet they went out looking anyway.
You are sitting in a chair using on a world wide computer network posting this nonsense and the only reason you are able to do so is because of the driven culture of Europe to explore the world in every aspect of the world.
The European culture is the proven master of technology in every way including ship building and navigation.
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you're not even capable of imagining a culture where a burning desire to explore and to conquer new lands
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Yes I am more then able to imagine such cultures as they sit in nice caves and never go beyond the next hill.
That does indeed work until a tribe with more drive come across that hill and take your women and property.
A culture like you seem to hold in high regards is just a culture waiting to be destroy when they come into contact with a more driven people.