How do historians learn about the past?

First for historians to find out about the past the need to gather there resources. These sources are evidence of the past the more we have of it the more we find out. The two sources that we have are Written sources and Non-Written sources. The example of written sources are, books, letters, diaries, songs, poems, speeches, business government, papers, posters, magazines, newspapers, blogs, maps, and adds. Written sources only go back to about 3000B.C.E. Because people did not come up with writing yet. The time before writing is Prehistory so historians relied on non-written sources so they could learn more about the past. Examples of non-written sources are, fossils, artifacts, tombs, monuments, and cities. Sources of evidence are always open to the interpretation of the winner. But also you need to think about the different point of view because there are different beliefs and experiences. Historians ask questions about a source to determine how accturate and useful it is. Different kinds of sources offer different kinds of information. Historians want to know if the author was actually at the event. Materials were created after people who studied original sources are called secondary sources. History is a big ginormous puzzle, it is the conversation between the present and the past. Some people fin bits of pieces from generation to generation. But other pieces of history have been lost forever. We try to make this puzzle complete. So this is how historians learn about the past.