Question: What nationality is the director of film The Shakers: Hands To Work, Hearts To God?
Sentence (from "Ken Burns"): His widely known documentary series include "The Civil War" (1990), "Baseball" (1994), "Jazz" (2001), "The War" (2007),  (2009), "Prohibition" (2011), "The Roosevelts" (2014), "The Vietnam War" (2017), and "Country Music" (2019).
Relevant evidence: No