Does macrodevelopment match microdevelopment?

I was wondering the other day if the development of the human being is in any way matched at the macro level by the development of nations and of humanity? The human being develops from infancy to adolescence and then into adulthood (with many intermediate steps). The human is the slowest creature on Earth to come into full maturity. Sometimes, human being are not fully functioning adults even into their late twenties and early thirties, as least in some nations. So, if I look at the development of humanity from its infancy (equivalent to prehistory or very early undocumented history, maybe?), to adolescence (equivalent to the age of empires, perhaps?), and into young adulthood (equivalent to where we may be now), what do I see? Well, it’s not quite as easy to see where we may be now, but I believe it gets easier the farther back we look. In thinking about prehistory, I see nothing. How could I? In thinking about the very earliest written documents and artifacts, I see just a bit more. Where I think I may really be able to see the developmental path is in humanity’s knowledge of itself and its environment. I think of the very early human communities in each continent (some say that, at first, humans were to be found only in Africa) and I think of them as isolated, separated from others by great distances, and thus with very little, if any, knowledge of the true dimensions of their environment. If there was a point of origin of humanity (literally and figuratively), which I personally believe there was, then a “big bang” followed it, which scattered humans to every continent. It was more like a “big walk” than a bang, but you get the idea. In a matter of a few thousand years (give or take a few), humanity ended up everywhere and began to diversify. So, were those early communities the infancy of humanity? The infant communicates very elementarily with others–did early humans develop language skills slowly and with lots of mistakes, like small children do? These early humans knew nothing about the Earth, nor the nature of the Moon, the Sun and the stars. No one knew how big the Earth was, nor what it was made of, how it functioned, how it could manage to sustain life. Things, for these early ancestors of ours, just “were.” When some group started walking, they just kept going and kept looking for food, temporary shelter and safety. Just like the human child, early humans understood two things above all others: the need for safety and the need for comfort. [More to come…]