The answer depends on what were in the thousands. In any case, human civilisations are older than the Western calendar, human beings are older than human civilisation, the earth is older than human beings, the solar system is older than the earth and so on. The universe is estimated as being over 14 billion years old.
Millions and millions of people. All the people that ever were except those that were born less than 2011 years ago. People have been around for tens of thousands of years.
By giants, I will assume that you mean very large people. In fact, the ancestors to people were the same size if not smaller than modern humans. These ancestors did not exist thousands of years ago, but many millions.
Nothing. While limestone existed millions of years ago there were no people to give it a name.
hundreds of thousands of millions of years ago is too far in the past - the universe is only 13.75 billion years old!However I know what you are asking and the organisms divided into three parts were the "trilobites". They lived about 500 million years ago.
There is evidence for life on earth at least some 3,600 million years ago. So the answer is non of the above but "thousands" of millions of years.
A group of people, probably thousands and thousands of years ago.
Fossil Fuel Power Plants were created when.....
with their surrondings
No, millions of years ago humans did not exist. The earliest known species of humans, Australopithecus, appeared approximately 4 million years ago, while modern humans, Homo sapiens, emerged around 300,000 years ago.
Aryans
There are three nouns. They are people, thousands, and years (all plural nouns).
They came to the Americas in about 1000 B.C.