to have slowed and become fairly stable. It has been estimated that there were around forty million people worldwide by 5000 BC, growing to 100 million by the Middle Bronze Age .

Europe

*The Cucuteni-Trypillia culture (aka Tripolye culture) began around 4800 BC. It was centred on modern Moldova and lasted in three defined phases until .
*From about 4500 BC until , a single dialect called Proto-Indo-European (PIE) existed

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