Harding was pretty much in tune with the times. If he had not been there, someone else with about the same views would have been President. The theme was isolationism in foreign policy and minimal regulation of business.
Prohibition was in effect, but Harding did not cause it although he did not try to repeal it.
Warren G. Harding
Harlem Renaissance was in 1920s-1930s and the US presidents during this were Harding, Coolidge, Hoover, and FDR.
Warren Harding was the one who died in the 20's,
US Presidents in the 1920,s were Wilson, Harding, Coolidge and Hoover.
Woodrow Wilson was president until March 4,1921 when Warren Harding took office, so I guess you would say that Harding is the second president of the 1920's. Harding was followed by Coolidge and Hoover.
Because he was the 29th President. Also Harding ran on the platform "Return to Normalcy" following America's involvement in WW1.
That would be all of them except for Woodrow Wilson, Warren Harding, Calvin Coolidge, and Herbert Hoover.
Harding Administration
I would call it a tie between Coolidge and Hoover. It was not Harding or Wilson.
Calvin Coolidge was the president during most, if not all, of the flapper era, aka the roaring twenties.
A return to normalcy
During WWI Woodrow Wilson was president, Coolidge followed him (early 1920s)