Human history begins with millions of years of hunter-gathering and lithic technology:
The Paleolithic ... is ... distinguished by the development of the most primitive stone tools ... and covers roughly 95% of human technological prehistory.
Then, within a few thousand years, there are multiple instances of independent developments associated with civilization, including agriculture, domestication, cities, writing, and politics:
Current scholarship generally identifies six sites where civilization emerged independently: Mesopotamia, the Nile River, the Indus River, the Yellow River, the Central Andes, and Mesoamerica.
This seems rather a coincidence. Presumably, either the precursors for civilization were already in place 11-10 ka BP when the American migrants split off from the rest of the world, or there has been significant technology interchange since then. Is there an accepted (or at least dominant) explanation for the multiple coincidental independent technological booms that occurred in just the last few thousand years of human history?
Note: There are quite a few theories for the advent of the related "neolithic revolution", so I fear the answer to my question is "no", but figured I'd ask.