Answer: Following the assassination of Franz Ferdinand, Austria Hungary was hella mad about it, so they went to Germany, and was like hey, help us get revenge on Serbia. So the two of them teamed up and declared war on Serbia on July 28th. Shortly after (a couple of days) Germany declares war on Russia, and then after Serbia's ally invaded France, that pushed Great Britain to declare war on Germany.
(hope this helps)
He returned Japan to imperial rule
So they have something to rely on
Rome was a republic and a monarchy
Greece was a democracy and oligarchy
