All Eras Beginning from 1902 to 1913 CE

This group gathers eras that began between 1902 and 1913 CE, placed among the eras of The Long Nineteenth Century. These are the last named periods before the First World War, when new empires, constitutional reforms and the first mass political movements opened fresh periods in several countries, among them the Taisho era in Japan, which began in 1912. An era belongs here when its cited source gives a start date inside this span. It excludes eras that began earlier, which sit in the neighboring groups of the same period band, and eras that began in 1914 or later, which belong to The Contemporary World. It does not turn on how long an era lasted or how widely it is remembered.