Salve narratives were mostly autobiographical in nature and gave an account of the person’s experience, their escape from slavery, and their lives after slavery.
(This paragraph answers both questions)
I believe it's the city of Kinshasa.
This is true.
The just war theory had existed long before it was put into law. When it was put into law, it was done so with the Geneva conventions which had to be signed by countries and if countries did something against it, like kill civilians, they would get punished severely for war crimes and crimes against humanity. This is a key component of both practices.