Editing 1920 (section)

===April===
{{Main|April 1920}} 
* [[April 2]] &ndash; The German army marches to the [[Ruhr]] to fight the [[Ruhr Red Army]].
* [[April 3]] &ndash; Failed [[Carl Gustaf Emil Mannerheim#1920 assassination attempt|assassination attempts on General Mannerheim]], retired leader of the victorious [[White Guard (Finland)|White Guard]] in the Finnish Civil War, led by Aleksander Weckman by order of [[Eino Rahja]], during a White Guard parade in [[Tampere]], [[Finland]].<ref>[http://www.mikkoporvali.fi/index.php?page=1038&lang=1 Mikko Porvali : Murhayritys joka jäi tekemättä] (in Finnish)</ref><ref>[https://walkhelsinki.fi/mannerheimin-murhayrityksen-jalkinaytos-kaytiin-vallilassa/ Mannerheimin murhayrityksen jälkinäytös käytiin Vallilassa] (in Finnish)</ref>
* [[April 4]] &ndash; [[1920 Palestine riots]]: Violence erupts between Arab and Jewish residents in [[Jerusalem]]; 9 are killed, 216 injured.
* [[April 6]] &ndash; The short-lived [[Far Eastern Republic]] is declared in eastern [[Siberia]].
* [[April 11]] &ndash; [[Mexican Revolution]]: [[Álvaro Obregón]] flees from Mexico City (during a trial intended to ruin his reputation) to [[Guerrero]], where he joins Fortunato Maycotte.
* [[April 19]]–[[April 26|26]] &ndash; [[San Remo conference]]: Representatives of Italy, France, the United Kingdom, and Japan meet to determine the [[League of Nations mandate]]s for administration of territories, following the [[partitioning of the Ottoman Empire]].
* [[April 19]] &ndash; Germany and [[Russian Soviet Federative Socialist Republic|Soviet Russia]] agree to the exchange of prisoners of war.
* [[April 20]] &ndash; [[Mexican Revolution]]: [[Álvaro Obregón]] announces (in [[Chilpancingo]]) that he intends to fight against the rule of [[Venustiano Carranza]].
* [[April 23]] &ndash; The [[Grand National Assembly of Turkey]] is founded by [[Mustafa Kemal Atatürk]], in [[Ankara]]. It denounces the government of Sultan [[Mehmed VI]] and announces a temporary constitution.
* [[April 24]] &ndash; [[Polish–Soviet War]]: [[Second Polish Republic|Polish]] and anti-Soviet [[Ukrainian People's Republic|Ukrainian]] troops attack the [[Red Army]] in Soviet Ukraine.
* [[April 26]] &ndash; The [[Khorezm People's Soviet Republic]] is officially created by [[Russian Soviet Federative Socialist Republic|Soviet Russia]], as the successor to the [[Khanate of Khiva]].
* [[April 28]] &ndash; The [[Azerbaijan Soviet Socialist Republic]] is officially created.