They were known for their achievements in art and poems.
<span>because of the Germans' decision to resume the policy of unrestricted submarine warfare.
Hope this helps.</span>
They restricted a majority of the Irish from political partication.
<span>They suspended many of the civil liberties and rights of the irish.</span>
I would say all of the above. Political because there may be tension between individuals, economic because it may have been that one part of the gov't didn't want to take on the other parts debts, and geographical like in the case of Greece where civilizations literally had an ocean between them.