Question

Many nations were reluctant to accept German refugees because these countries were

concerned about the economic impact.
fearful of German retaliation against the refugees.
already overpopulated with their own people.
lacking adequate land size to accommodate the refugees.

Answer 1

option 1 covers all the others, best answer imo

Answer 2

Already overpopulated with their own people. An example of this was in 1939 when the United States filled its combined quota of Germany and Austria. However, this limit did not come close to satisfying demand; by the end of June 1939, 309,000 German, Austrian and Czech Jews had requested the 27,000 available places within the quota. Similarly, it happened with other countries such as Great Britain, France, Canada, Australia.