East prussia remained a part of germany. why might the loss of the polish corridor and danzig have been especially difficult for germans

After the Versailles treaty, following the defeat of Germany in WWI, East prussia was left as a Germany exclave, separated completely from the main country by the Polish corridor. This caused isolation in the people from East Prussia, because moving through their own country now required from them a Polish Visa or pass feared and rigorous inspections.  

The integration of the radio into widespread use during the 1920s most transformed the American economy and culture, since the radio allowed people to receive both news and entertainment far more easily.