Through artifacts , other prehistoric items, and the research written down by scientists, they use the method called Carbon Dating. Although there may be more than this, the ones listed above are most common.
You could take part in the History classes held in Night Schools or alternatively, take a course at one of the colleges, History lessons is a very popular subject.
By finding artifacts
There are a number of things that scientists study to learn about prehistory. This will include archaeological facts and fossil evidence which gives an explanation of how most things came into being.
The word "prehistory" implies "before writing existed". There are no "written sources" from that time.
Prehistory - album - was created in 1981.
prehistory is before and history is now
Q. relationship of prehistory with physical science ?
Prehistory Museum of Valencia was created in 1927.
Museum of Lebanese Prehistory was created in 2000.
The Myth of Matriarchal Prehistory was created in 2000.
The prehistory of the Romans, and how they got to Italy, is not completely known.
Institutions are a creation of humans, therfore there were no institutions in prehistory.
Which phrase defines the time called prehistory