Based on the context and the answer, generate a question. 

Context: Europe and Japan are said to be " dying from within " because of not enough population -- babies are not being born quickly enough to replace the current population and support the older folks . America has only escaped this dire fate do to immigration . ( Europe had immigration , too , but they are not integrating , so , apparently , it does n't " count .

Answer:

There is a negative birthrate .



Why is the populating declining in Japan ?