One of the follwwing can be described as agreat revolution in the human life?

Question

1 knowledge of polishing tools and weapons,
2 discovery of agriculture,
3 Beginning of the construction of huts,
4 discovery of rotary motion

Answer 1

4. discovery of rotary motion

The word "revolution" itself is derived from rotary motion.

Answer 2

2 discovery of agriculture,

For one, we have to eat. And two, with a settled agriculturally based existence we could stop wandering and make time to develop the other things on the list.

Answer 3

During 1800s, Anthropologists had a problem as to how
to classify human beings. One researcher proposed the
expression "intelligent animal". After advanced studies
on monkeys, it was dropped. Another researcher proposed
"tool using animal". After observing some animals
making wooden tools and sharpening them with knife like
stones, it was dropped. Another researcher proposed
"weapon using animal". A decade ago, a rare film was
shot in African forests. One short monkey was hit very
badly by a big monkey. The short monkey prepared a
wooden knife using stones and hid it on the top of a
tree. After some days, when the big monkey came to
attack the short monkey, it ran up to the tree for the
weapon it has hid and killed the big monkey. The one
thing that the anthropologists found with any group of
human beings, even if they did not have contacts with
the out side world for thousands of years, is
spirituality with some form of religion. So, man is a
"spiritual animal" if you want to call him that way.

The Upanishads say that "Manush" (human) was so named
because he has "Manas" a mind higher than that of the
animals which realises the divinity in creation. It was
present since the creation of human beings. Religion is
the characteristic feature of most of the human beings.
It is as eternal and and as unchanging as the Almighty.
Disbelief by a few will not affect it.

Answer 4

using tools, starting to farm, building, and the wheel are ALL revolutions.