I think that the answer is (3)
Because they are as close as possible to the actual events as they can get. Every time someone tells a story it changes. The tone changes the details some forgotten some added. So therefore Historians must hold onto there primary sources.
<span>According to a website maintained by the History Department at Oxford University and </span><span>The British Museum states are the phrases that show that we are talking about reliable sources. They have formal construction and both the Oxford University and the British Museum are reliable sources, which base their statements upon careful research and study. </span>
Answer:
They used etchings before it all developed. The closest thing is typesetting..not the computer type that is used today.
