However, there is one Royal family whose net worth exceeds most ... However, following its collapse after World War I, these monarchies have seen their power and wealth grow exponentially.

What were the causes of World War One and how did the war develop? Find out in our guide. What role did the British Empire play in the war? What role did the British Empire and the royal family ...

But there is one royal family that far surpasses most with a ... Since its collapse after World War I, monarchies in the Middle East have seen their power and wealth increase exponentially.