It led for the citizens of each state to decide whether or not their state would be a free or slave state. Although it did backfire with events such as bleeding Kansas
B, atomic bombs is the correct answer
Answer:
Any possible factor, as long as the product matches their time of need and how necessary the product is needed. Anything that could be a beneficial improvement or a solution to a problem that affects everyone around you.
Explanation: Take, for example, face masks and protection. Everyone is required to wear masks and stay distanced and clean. That is what companies are doing and promoting. They're making themselves known by making a difference and helping people to make themselves have a positive image. The Pandemic has changed everyone's lives, so those masks are going to be sold out fast. Anything that could help or protect anyone in a situation like this will be needed.
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.
During the period of the crusades warfare between Muslims and Christians lasted nearly 200 years.
Hope this helps. :)