Who assassinated archduke francis ferdinand and why?

 Gavrilo Princip, to break off Austria-Hungary's South Slav provinces so they could be combined into a Yugoslavia.

they gained control over the philippines, east dutch indies/indonesia, much of new guinea, the solomon islands, guam, and other strategic areas all over the western pacific. japan even occupied part of the aleutian islands, which belonged to alaska.

source:

have a great day