A thought-provoking book, rather short but to the point, by an archaeologist, Robert L. Kelly, Professor of Anthropology at the University of Wyoming. Looking over 6 million years of human/hominin history, he points out the four key pivot points of that history and, looking ahead, gives us the evidence for the "fifth beginning," actually beginning by 1500 AD. Each turning point represented a new way of organizing society.
The first beginning is evident--tool-making by a bipedal ape ( australopithecines in Africa), between 3 and 4 million years ago. This led to the development of technology, including the making of fire, perhaps as early as one million years ago (by Homo erectus).
The second beginning was, I think, a very mysterious one but, perhaps, the most significant, as it made us human. By 50,000 years ago, Homo sapiens created art, music, and religion, and became cultural beings. This was a raising of consciousness that enabled humans to make a symbolic construct of their world. This would be key to leading to the third beginning--agriculture. Around 10,000 years ago, most likely in the Middle East, some nomadic hunters were able to settle the land, raising plants and animals and forming villages. Populations would increase greatly.
And the fourth beginning would be happening around 5000 years ago in Mesopotamia and Egypt--the rise of states to organize the increasing populations--of course, mainly for the benefit of tiny elites who did the organizing ( but the hard-working peasants would hope some benefits would trickle-down to them. How much has changed?)
According to Kelly, the fifth beginning has started and this is "globalization," the full effects of which we have only begun to feel. As part of this he sees the end of nation-states ( the break-up of the USSR was an early sign of this) and increasing international cooperation, made possible by worldwide communications.
Is Kelly too optimistic? What he sees is that for the first time in millions of years, there is the possibility of humanity realizing its great potential.