title_body: sharing books on kindle is not allowed The loaning of books option is not allowed on all amazon sites. It seems like it is allowed only on the US site. I could not fin this restriction on their loan books documentation. Why is their such a restriction based on countries?
upvoted_answer: According to this site This is due to geographical restrictions the Editor can impose into a book. BTW, this option is enabled in the Mexico site so it's not only on the US.