Segundo Karl Max o trabalho nos primórdios da humanidade revelou-se pela Liberdade e criatividade decorrentes da:

answer; adoption stage;

answer; the above statement is (true);

a family can go through many changes which would make it complex. having children can cause a change and increase the complexity. this would change the distribution of authority and management, as the older siblings will at some point be in charge of the younger ones, and discipline must be distributed when they get in trouble.