Why did The Birth of a Nation establish director D W Griffith as a film master?

"The Birth of a Nation" established D.W. Griffith as a film master due to its groundbreaking use of narrative structure, innovative filmmaking techniques, and ambitious scope. The film showcased advanced editing methods, including cross-cutting and close-ups, which enhanced emotional engagement and storytelling. Despite its controversial and racist themes, Griffith's ability to create a visually compelling and cohesive narrative set new standards in cinematic artistry and influenced the future of filmmaking.