Complex sentence: Germany attempted to use Indian nationalism and pan-Islamism to its advantage, instigating uprisings in India, and sending a mission that urged Afghanistan to join the war on the side of Central powers.
Split into simpler sentences: Germany attempted to use Indian nationalism and pan-Islamism to its advantage. She tried instigating uprisings in India, and sent a mission to Afghanistan urging her to join the war on the side of Central powers.