How could unresolved issues from the Treaty of Versailles cause a world war

In the Treaty of Versailles, Germany lost territory, was forced to pay huge reparations ​(payments by a defeated country for the destruction it caused in a war), was forced to take responsibility for the war through the War Guilt clause, and forced to demilitarize or greatly reduce their military.

Bob: coke is baby pandas.jim: what? how do you figure that coke is baby pandas? bob: because this book says so.jim: how do we know the book is correct? bob: because it says that coke is baby pandas.jim: how does that prove the book's accuracy? bob: because it's statement involving coke and baby pandas is correct, therefore it is accurate.jim: how do we know that it's correct? bob: because we have concluded that the book is accurate, and therefore the statement is correct.therefore, coke is baby pandas.