Developement of human from mamals.

We are mamals.And thus we are basically animals.This is the thing because of that one person try to make other as a slave if one is made free to do so.Similarly one community try the same thing on other communitiy.And same is true for two countries.
This is the same thing when a society try to destroy one person ,if the person does not have equal power for saving himself due to any reason(it may be the case when the person can not save his privacy and he loses his power to save him individualy.
We group ourself for surviving us against nature .We also make groups to develop ourself but in this case we try to use skills of other person or groups.And when one person has to develop more then other person in the group,or one group wants to develop more then other group the process of use of each other skills starts to turn into try to make other person or group as slave.
Naturly each person is differently developes from other.This is the reason why one person as ambition for more developing then other.