This is an outstanding textbook. I use it as the basis of my teaching at IB level and the students find it accessible and clear. The writing is pitched at just the right level for the target audience and there is a liberal use of visual sources, stimulus questions and sourcework exercises throughout. If you're looking for just one book to teach the Standard Level IB course for this topic, this is your best choice. An important point: the title of the book states that it starts in 1945, but in fact there is plenty of information too about the period after 1914 which is useful for Higher Level students too.