Hi, in a post like this that presents a ton of factual information, there needs to be sources cited for the information itself, and not just for the images. RE the images, images that are not owned by the post author should be sourced from free use sources like pixabay or wiki commons. Simply providing an image source link when it is not to a free use source is not enough.

Whether or not this article is a direct copy/paste, it is almost certainly just a rewrite of information about the San from some other source - e.g. Wikipedia, etc.