Answer: The "Second Klan" began shortly during the B. World War I era.
Step-by-step explanation: The Second Klan was founded by William Joseph Simmons in Georgia on Thanksgiving of 1915. Therefore, it started a year after the beginning of World War I, which extended from 1914 until 1918. Furthermore, the Second Klan was greatly inspired by the film The Birth of the Nation, released on February of 1915, as they started to wear the white costumes after watching the movie.