Internal conflicts[edit]
October Revolution in Russia results in the overthrow of capitalism and the establishment of the world's first self-proclaimed socialist state; political upheaval in Russia culminating in the establishment of the Russian SFSR and the assassination of Emperor Nicholas II and the royal family.
The Russian Revolution (1917) is the collective term for the series of revolutions in Russia in 1917, which destroyed the Tsarist autocracy and led to the creation of the Soviet Union.
April 13, 1919 - The Jallianwala Bagh massacre, at Amritsar in the Punjab Province of British India, sows the seeds of discontent and leads to the birth of the Indian Independence Movement.
Xinhai Revolution causes the overthrow of China's ruling Qing Dynasty, and the establishment of the Republic of China.
Mexican Revolution (1910–1920) Francisco I. Madero proclaims the elections of 1910 null and void, and calls for an armed revolution at 6 p.m. against the illegitimate presidency/dictatorship of Porfirio Díaz. The revolution lead to the ouster of Porfirio Díaz (who ruled from 1876 to 1880 and since 1884) six months later. The Revolution progressively becomes a civil war with multiple factions and phases, culminating with the Mexican Constitution of 1917, but combat would persist for three more years.