I believe the answer is: Hassle
In this context, a hassle refers to some situation or individuals that caused a certain level of inconvenience toward other people. The person that considered to be a hassle does not necessarily hated by the other individual, but that individual's rate of of happiness would increase if the hassle is gone.
Answer:
the concept of the sustainable development come into existence in 1946
Answer:
To gain resources other people had that they didn't I'd imagine.
Nation of Islam is the answer