Question

Q.23. The tools made of stone of the Old Stone Age have been found in the
rivers urgently​

Answer 1

Answer:

The Stone Age was a broad prehistoric period during which stone was widely used to make implements with an edge, a point, or a percussion surface. The period lasted for roughly 3.4 million years,[1] and ended between 8700 BCE and 2000 BCE ,[citation needed] with the advent of metalworking.[2] Though some simple metalworking of malleable metals, particularly the use of gold and copper for purposes of ornamentation, was known in the Stone Age, it is the melting and smelting of copper that marks the end of the Stone Age.[3] In western Asia this occurred by about 3000 BCE, when bronze became widespread. The term Bronze Age is used to describe the cultures that used it.[clarification needed]

Stone Age artifacts that have been discovered include tools used by modern humans, by their predecessor species in the genus Homo, and possibly by the earlier partly-contemporaneous genera Australopithecus and Paranthropus. Bone tools have been discovered that were used during this period as well but these are rarely preserved in the archaeological record. The Stone Age is further subdivided by the types of stone tools in use.

The Stone Age is the first period in the three-age system frequently used in archaeology to divide the timeline of human technological prehistory into functional periods:

Explanation: