3000 years ago it was about 1000 BC or BCE. We call it 'ancient times'. By that time the early civilizations had developed (Egypt, Babylonia, Assyria, Phoenicia, Indus Valley, Minoan on Crete,etc.).
I believe it is 991 bce
It is a difficult question...looking at the records we can find three civilizations which existed about 7000-5000 BCE they were:Egyption or Nile valleyIndian or Indus valleySumerianIn all these three, Indus valley was most advanced ... trade existed between Indus and Sumerian. The Indus valley civilization mainly expanded around the Indus river. However if you look at Indian texts we will find that due to a gigantic explosion or fire(at the end of Mahabharata) all the civilizations died and river Saraswati also dried up.It is a difficut question...looking at the records we can find three civilizations which existed adout 7000-5000 BCE.
since between 8000 BCE and 3000 BCE
Harappan
yes they did
in 3000 BCE
Buddhism has existed since 528 BCE, which is over 2,540 years.
It was between 4000 and 3000 BCE.
The Shekel, in Mesopotamia around 3000 BCE.
It is not known for sure but it is well into the BCE times, perhaps as early as 3000 BCE.
The first kingdoms to have developed were the early ancient civilizations in Mesopotamia, such as Sumer and Akkad. These kingdoms emerged around 3500-3000 BCE and are considered some of the earliest known forms of organized political entities.