S1 : Human ways of life have steadily changed. S6 : During the last few years change has been even more rapid than usual. P : From that time to this, civilization has always been changing. Q : About ten thousand years ago, man lived entirely by hunting. R : Ancient Egypt - Greece - The Roman Empire - the Dark Ages and the Middle Ages - The Renaissance - the age of modern science and of modern nations - one has succeeded the other; and history has never stood still. S : A settled civilized life began only when agriculture was discovered. The proper sequence should be: