Historians use the historical method to gather and assess material from a wide range of primary sources in order to answer queries about historical events. During the course of their inquiries, they may examine written documents, physical artifacts, and other kinds of proof.
Written history emerges relatively late in human history. The first written documents stretch back about 5,000 years in Egypt and ancient Sumer. The oldest Sumerian documents were made on earthenware with wedge-shaped (cuneiform) marks made with reeds cut at an angle.I believe you're referring to sources. Sources can be primary or secondary.
The individual always has a significant impact on how the chronicler records the information. Let's take a look at an illustration. The Emperor of China . If he had left a supplementary source that someone else obtained, then it was most certainly not from his viewpoint, but from the perspective of another individual. But if he kept a private diary, we'd know what he thought about certain issues. The location is also important because we can see where the individual walked and how that location affected them. What that location was like back then. Time is also important because whether it is the 21st century or the 16th century, it counts based on how the world was back then or now. As well as the development.
Because there is no universal way of time, historians must understand howto use societal variables and context to deduce the sequence of occurrences over time.