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How many years ago did the neolithic age begin?
about 120 years ago
How many years ago did the old stone age begin?
About two million years ago
How many years or centuries are there on record for BC - Before Christ?
Writing systems go back more than to around 4,100 years BC. However, simple tokens, the precursors to writing, have been dated to around 7,000 years BC. Early Egyptian records show that its culture was beginning to resemble the Pharaonic ages from around 5,500 BC. The "Old" Predynastic, or Amratian period, started around 4500 BC. The first pyramids were built around 2,900 years BC. Cave art in Europe also forms a record of human existence. This has been dated at up to 30,000 years BC. Prior to 30,000 years ago, we must rely on the evidence provided by archaeologists, paleo-anthropologists, geologists and others. There are physical records of modern humans dating back to around 200,000 years ago.
If the period of Ancient Greece finally ended in 146 BC approximately how many years have passed since then?
It would be 2020 Actually 2,155 years have passed since the year 146 BC.
When did the ice ages begin?
About 20,000 years ago. I read it off of Wikipedia. There have been many ice ages over the past 2.4 billion years. The present ice age started about 2.6 million years ago although there have been many warm periods,(interglacials), during that time, we are in one now.
