Answer:
The Paleolithic people were skillful hunters and developed sharp weapons made of stone for hunting purpose. They had a knowledge of art and infrastructure which was evident from the discovery of metal tools, jewellery like bracelets made of shells, bones and ivory. They even did paintings on the rocks and body art.
Explanation:
It began a decade long boom.
This was known as the Roaring Twenties :)
The development of the steam engine....of that is an option. You really should include the choices.
