… is from page 248 of Burton Folsom, Jr.’s 2008 volume, New Deal or Raw Deal? How FDR’s Economic Legacy Has Damaged America:
Other nations recovered from the Great Depression more quickly than did the United States. During the late 1930s, the League of Nations collected statistics from the United States and from many other nations on industrial recovery. Much of that data supports [sic*] the idea that Roosevelt’s New Deal created economic uncertainty and was in fact uniquely unsuccessful as a recovery program.
* “Data” is plural, not singular.