The year of 4000BC in Mesopotamia is generally considered by historians to be the "big bang" explosion beginning mankind's development of civilization. From this time over a period of 6000 years we went from nomadic cave-men type people until our supernatual modern would of today. That is why the Hebrew-Christian time-keeping chart is so amazing. The Bible, although written at least 3000 years ago describes this.
Gen.4.22 - Mankind uses metal.
Gen 3;23 - Mankind to till the ground.
Gen 2;20 - Adam names the animals.
Gen. 2;8 - Put man in garden.
Jn.1 - Beginning was the word(language)
Gen. 2;7 Breath of life(language)
Gen. 1;27 Humans Created
It is evident to see that the first few chapters of Genesis are describing the beginning of civilization in Mesopotamia around 4000BC. We now know these facts to be true from archeological evidence that has been gathered and analysed. This was done only in the last two hundred years during the 19th and 20th centuries. But how did the ancient bible writer know these things? Primitive people could't know what was happining all over the rest of the world.
After all the Bible was first compiled about 500BC although the book of Genesis is said to be much older. It is amazing that someone could realize and write the now credible facts! That civilization began in Mesopotamia in the forms of language, writing, large scale agriculture, discovery of metal and more, is the statement that is described in the second Genesis Creation Story of chapter two. These innovations first originated here, and then only after numerous millennium spread throughtout the rest of the world. Europeans were still barbarians when it arrived via Rome.