That would be the Munich agreement
It was horrible. In fact, it was in The Great Depression.
Many people were unemployed, hand no home, and had very low wages.
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.
