"Switch out 1919 for 1939 and focus on the start of WW2 and presto! You have a momentous world occasion to mark your "Biblical Chronology." Problem solved!"
Except that the leadership is completely US-centric. Thus WW2 wouldn't have started until December 7, 1941. 😉😺
Somewhat off topic, I remember arguing with an old JW lady about 1914. She declared that WW1 was unique in that all the nations of the world were involved for the first time. I disputed that claim, saying that the Napoleonic wars were pretty vast in scope, involving a lot of nations of the time and their colonies, and battles associated with it were happening way outside of Europe's borders.