Written constitutions hold value in legal systems, while unwritten constitutions are held simply by morals, and are sometimes valued in legal systems.
Some causes of nations joining world war 1
- Assassination of Archduke Franz Ferdinand
- Military rivalry between powerful nations
- US: the Zimmermann Telegram and the sinking of the Lusitania
- Colonies: The wish that if they fought for for their European countries they could be free, and so they join the war, making it a World War effectively
hope this helps
I think that it is false I’m not really sure because I haven’t learned this