They wrote a new constitution.
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The Immigration Act of 1924 limited the number of immigrants allowed entry into the United States through a national origins
If you can please Provide answer Choices but other than that, I would think at the end of WW2 we had issues cleaning up the Radiation of the bombing in Japan and dealing with how to help the Jews that were captured and kept in encampments.
Answer to your question when I factored:
4a^2 (8a+3)
A major neutral country was, as an example, Yugoslavia (the leader non-aligned movement), which supported trade relations with both NATO and the Warsaw Pact. In the later years of the Cold War, China, became mostly neutral (though some may say that they became more Western Aligned). Throughout the Cold War, India officially didn't join any alliance, however they were often supported by the Soviet Union in conflicts against China or Pakistan.