Final answer:
The Atlantic Charter was valued by the Allied nations to create a secure post-war world and prevent another global conflict.
Step-by-step explanation:
The Atlantic Charter was valued by the Allied nations during World War II because they wanted to create a more secure world by preventing more global conflict. It was a joint statement issued by the United States and the United Kingdom that outlined their goals for the post-war world, including self-determination for nations, disarmament of aggressor nations, and the establishment of a lasting peace. The Charter aimed to prevent another devastating world war and promote international cooperation and stability.
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