Promotion could have multiple meanings.
For example, if you say "Mr. Knight got promoted (or got a promotion) from supervisor to manager". There promotion means "raise".
If a product is at promotion there promotion means advertising efforts.
It could also refer to a way to support a cause. For example: There's a campaing supporting healthy lifestyle promotion.
It helped them understand things that helped their literature.
I hot dog could be a sandwich because it’s two bread with meat In side, I dont think it’s a sandwich because a bun is one piece of bread.
Answer:
The Monroe Doctrine is an example of Nationalism.
Maybe because they both had different perspectives about it.
