Recommendations please: "Around the world" - books/novels for YA/teen summer reading

<p>I wish everyone would stop saying that some books are too ‘grown up’ or ‘heavy’ for a 15 y/o. They aren’t kids anymore- to be frank, they know that sex, drugs, rape, torture, death, violence, and bigotry exist. Rather let them develop the way they think about those things through books rather than leave them in the shadows.</p>