How many thouands of years back is the 3rd millennium BC?

Question: How many thouands of years back is the 3rd millennium BC!?
Best Answer - Chosen by Asker:

It begins 5000 years ago and goes up to 6000 years ago!.
To see this graphically, draw a series of 7 vertical lines on a piece of paper about an inch apart!. Label the rightmost line 2000(which is abt our currect year) and moving to the left, label each mark: 2000, 1000, 0, 1000, 2000, 3000, 4000!.
Your third millenium BC is between the leftmost 3000 and 4000!.
Then note how many 1000 year intervals there are between now and your past date!.Www@QuestionHome@Com

From 2000BC-2999BC

That means the period 4 to 5 thousand years back!.Www@QuestionHome@Com

2000-3000 b!.cWww@QuestionHome@Com