Answer: The revolutionary leader that President Calvin Coolidge described as a "combined Benjamin Franklin and George Washington of China was D. Sun Yat-sen.
Explanation: Calvin Coolidge was the 30th President of the United States. He was in power from 1923 to 1929. Coolidge was also U.S. Vice President and the 48th Governor of Massachusetts. Moreover, <u>he compared Sun Yat-sen, the first provisional president of the Republic of China</u> and the leader of the Nationalist Party of China,<u> with</u> Benjamin Franklin and George Washington, <u>two of the founding fathers of the United States of America</u>.
It was "Chiang Kai-shek" whom Calvin Collidge described as a “combined Benjamin Franklin and George Washington of China". This was because he was noting his ability to control the populous and be inspirational.
For those that could not write (So most), they carried a seal around either on a necklace or otherwise that they could use to stamp with ink to signify 'signing' something.