The WWI had a great impact on the political and organizational form of Croatia, since due to the Versailles Treaty, the Austro-Hungarian Empire had to dissolve, so it was forced to join Yugoslavia
The WWII also had a giant impact on the way of life of Croatia, since it was subjected to the control of the axis, which caused many deaths and miserable living conditions, also for this reason we can relate the one that after the war, Yugoslavia unite again, now with a communist system.