Kristina and the girl king

This book is written in Sweden in 1638 by a teenager named Kristina ,and When she was born  something really bad happens and the whole of Sweden collaps in horror and dismay as to hear a girl king is born! Many people help this girl king to be a king and even after the worst day of Swedens lives. I reccomend this book for ages 10 and up because some of it is hard to understand and some of the names too. But over all this book is great for children that love diaries and history.