They take an estimate on how old the fossil, artifact is then they examine it to tell where the artifact was made, if it is a fossil then tell what ancient creature it is then they can tell what era that creature was from. If it is an unknown fossil they give it a name, but the only way to learn about the past is to decipher hieroglyphics or examine and try to tell what the story on the walls inside the tombs, pyramids, and ancient monuments. I hope you like this answer.
:)
Archeologists.
We learn that archeologists dig up fossils and they can determine what year it came from, etc.
archeologists are the persons who study about the past with the help of the ancient ruins
Scientists who study the unwritten past are called archaeologists. They analyze artifacts and remains from ancient civilizations to understand their cultures, societies, and behaviors. By studying these physical objects, they can piece together a picture of the past.
Anthropologist can learn about prehistoric life
Scientists who examine objects to learn about past people and cultures are known as archaeologists. They have played a very significant role in putting various issues about the early days into perspective.
they provide artifacts to help them study the past
Archeologists study things from the past such as ancient egypt and norse artifacts.
Archeologists study bones and things about the past that lead to ancient history.
By very careful scientific recording of sites once occupied by early people.
Scientists that learn about the past are called historians because they learn about history/past.
The past tense of "learn" is "learned" in American English and "learnt" in British English.