What was the main function of George Creef’s “four-minute men”?

The main function of George Creel’s “four-minute men” was that they delivered short, patriotic speeches to gain support for the war.

Explanation:

The 'four-minute men' was a division of the Committee on Public Information, headed by George Creel. The organization included volunteer speakers who assisted various government departments on the issues of national defence. They presented messages during the intervals in the theatres on the subjects of national importance. The total work of the organization was under the control of the Government. The speeches were prepared and presented to the authorities in Washington.

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