In your own words, explain why there is no middle to the observable universe
please hell

Its curved and constantly expands according to our current knowledge

Explanation:

Space itself is curved, so as the universe expands from the Big Bang, it is somewhat like the two-dimensional space on a balloon. But just like the surface of that balloon, there is no center in the universe.

Source: https://spaceplace.nasa.gov/review/dr-marc-space/center-of-universe.html

first second and third

explanation:

either b) they were often feared and despised by other native cultures. or

c) their obsession allowed them to coexist with many other native cultures because of their peaceful nature.