Historians regard the great depression as probably the greatest factor in causing world war ii because a. americans fared so much better than europeans, leading to anger and in-fighting. b. facing dwindling resources of its own, germany hoped to improve its economy by annexing other countries. c. it led american businesses to reduce investments in germany, which decreased that nation's production and its ability to repay its world war i reparations. d. all of these choices. e. none of these choices