Was the 'Roaring 20's a positive or negative time?

no

explanation:

answereruption of molten material; magnetic stripes in the rock of the ocean floor; the age of the rocks themselves;

answergeorge martin;

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.