World War I
World War I lasted from July 28, 1914 – November 11, 1918. It started when the Archduke of Austria-Hungary, Franz Ferdinand, was assassinated by Serbia. It ended when Germany formally surrendered.
Eventho it changed it kind of still is similar at the same time
The Boston massacre was partially the colonists fault because they were harassing the British soldiers by throwing, sticks, rocks and snowballs at them. The soldiers panicked and many accounts say that they heard someone yell fire.
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The Roman empire being gigantic at one point covering most of Europe, North Africa, and some of Asia was impossible to rule. The outer most towns and cities we're not really being ruled at all. so the Roman empire probably separated to make it easier to rule all of the empire at once.
