<span>Wealthy merchants hope this helps</span>
This is a personal question, which means that only you can answer it. However, I can give some examples that might help guide your work.
An example of a primary source that you might encounter in your own life is that of a news article. As this article is likely to be written by a reporter witnessing the events, it can be considered a primary source. On the other hand, an example of a secondary source would be a non-fiction book that talks about a historical event. This is because such a book would give a second-hand account of an event based on historical information.
Apollo 11, in July 1969, climaxed the step-by-step procedure with a lunar landing; on July 20 astronaut Neil Armstrong and then Edwin (“Buzz”) Aldrin became the first humans to set foot on the Moon's surface.
Fox talbot - <span>Photographs
isaac singer - </span>Sewing machine
<span>Etienne Lenoir - <span>Gasoline engine
</span></span><span>Alfred Nobel - <span>Dynamite
</span></span><span>Wilhelm Roentgen - <span>X-rays</span></span>
