Admitting more refugees means that more people are put into the workforce. This could also be unwanted because it would increase the number of the unemployed, not helping the economic crisis that these countries were in. This could also be even worse, because it would sap the government's resources to try and feed these newcomers leaving less food/money for everyone else. The same amount of resources spread over more people.
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They did and helped many people but also affected the environment and people already living there by taking resources and supplies they grew and made to survive.
