WILLIAM JANNEN has been a lawyer, a teacher, and an investor, but he has studied theology and religion for most of his adult life. At Brooklyn College–CUNY, he taught modern European history. In 19...ver maisWILLIAM JANNEN has been a lawyer, a teacher, and an investor, but he has studied theology and religion for most of his adult life. At Brooklyn College–CUNY, he taught modern European history. In 1997, he published The Lions of July: A Prelude to War, 1914 with Presidio Press.ver menos