What event in Sarajevo ignited WWI? A. an ultimatum presented to Serbia
B. the assassination of Archduke Franz Ferdinand and his wife Sofia
C. Austria's rejection of Serbia's offer and declaration of war on Serbia
D. Russia's mobilization of troops along the Austrian border

Answer which of the following was a major outcome of european imperialism in africa after the industrial revolution? o a. the area around the suez canal experienced decades of military conflict. b. africans in the belgian congo suffered forced labor and oppression. o c. the discovery of rich natural resources led to african economic prosperity. o d. europeans brought disease to central africa, killing thousands.