From an evolutionary perspective, everyone wins when a person who has been in the past repays that assistance in the future. this concept is called altruism.

the answer is a wheel

abolish

do away with

unanimous

in complete agreement

secede

separate; break free

inauguration

starting a new position with a formal ceremony.

cooperationist

people who wanted the north to cooperate with the south

surrender

to give up

volunteer

perform a service for free

draft

involuntary service in military

retreat

withdraw; move away from enemy

advisor

expert who gives advice

explanation:

reciprocal                                                                                        

Explanation:

Reciprocal altruism: In evolutionary biology, the term reciprocal altruism is defined as a particular behavior in which a specific organism acts in a certain manner or way that leads to temporary reduction of its fitness, therefore, increases the other organism's fitness and holding an expectation that the other organism will act or behave the same way in future. It can happen between individuals who are non-relative.

In the question above, the given concept is called reciprocal altruism.