Answer:
New Imperialism is the answer
Explanation:
In historical contexts, New Imperialism characterizes a period of colonial expansion by European powers, the United States, and Japan during the late 19th and early 20th centuries. The period featured an unprecedented pursuit of overseas territorial acquisitions.
to promote prohibition..........
Is was about getting revenge for the Arch Duke Franz Ferdinand yet many countries has peace treatise with many others so they all attacked one one-another