The first article is presented in a more academic way, showing that there are historical, irrefutable documents that buy that slavery, in fact, happened, besides showing how long it was, lasting hundreds of years. The article also shows that slavery evolved together with society and that it can still be seen today among rural workers with little access to information and who do not know how to fight for their rights.
The second article, has a less academic aspect, it does not show historical evidence about slavery, but more directly it states that it exists today and that we must fight it, for this, there is an organization that takes information to producers rural areas, who are the biggest victims of modern slavery, and make sure they are informed about their labor rights so that they are not exploited.
B, handwritten letters, because the letters are probably the most credible, especially since they're a first-hand account of things that happened to your ancestors, and as WorldlyGlass45 mentioned in their answer to this question on another post, you'll most likely get the most info from the letters as well.
Answer: Reporters’ Purposes to tell an interesting story, to share a person’s life history, to honor courageous actions.
Miep Gies’s Purposes to preserve Anne Frank’s memory, to encourage people to help others, to promote doing the right thing.
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