From world-renowned historian and philosopher Yuval Noah Harari, the author of Sapiens, comes the second volume in the bestselling Unstoppable Us middle-grade series that traces human development from hunter-gatherer societies to cities and empires.Humans may have taken over the world, but what happened next? How did our hunter-gatherer ancestors become village farmers? Why were kingdoms and laws established? How did we go from being the rulers of Earth to the rulers of each