20. What was the Freedmen's Bureau most successful at?​

The Educational Programs of the Freedmen's Bureau Were a Success. A major focus of the Freedmen's Bureau was the education of former slaves, and in that area it was generally considered a success. As many slaves had been forbidden to learn to read and write, there was a widespread need for literacy education.

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Explanation:

chlorofluorocarbons are released via: aerosol sprays and refrigerants.

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