I have been watching Galaxy Express 999 and many other scifi if humanity starts colonizing other planets do you

>will humanity be able to keep contact over long distances?
>will we have different sectors of universes and clusters just for different nations, ie, indochina,american south
>think that different cultures will develop?
>do you think some planets will be underdeveloped ?
>or do you think colonies will just be harsh enviornments with just scientists occupying them

Do you think such a thing will occur hundreds of thousands of years from now?
Idk I have been thinking about it all day