Why was russia drawn into a conflict with germany after austria-hungary declared war on serbia? a. russia and germany both tried to capture serbian territory before austria-hungary could invade. b. russia convinced france to attack germany so that germany wouldn't be able to aid austria-hungary against serbia. c. russia refused germany's demand to stop mobilizing its military after austria-hungary declared war. d. russia violated its military alliance with germany by joining austria-hungary in invading serbia. l