Was ist der Unterschied zwischen claim und demand und request und require und ask for ?Du kannst auch einfach Beispielsätze geben.

It basically has to do with severity, or necessity of the situation.

EX: She claims the dog for herself. vs. She requests the dog should be owned by herself.

In the first instance, she is saying the the dog should be hers. In the second sentence, she is asking politely (~ ください) if she can own the dog.

EX: She demands the dog for herself. vs. She asks for the dog for herself.

In the first sentence, she is using her authority to claim the dog. She is being forceful in her actions to take the dog. In the second sentence, she is not being forceful. She is being more polite to get the dog (less polite than ~ください).

EX: She requires her dog.

In this sentence, she needs the dog for some purpose.