Hungarian Democratic Republic
With the volatile and politically unstable atmosphere of Central Europe in the inter-war years, the establishment of independent governments of the former Austro-Hungarian Empire in November 1918 would see the struggle to regain territories of the former empire. However, the Hungarian President of the Hungarian Democratic Republic, Mihály Károlyi, resigned within four months (on March 20, 1919) in favor of Béla Kun, a pro-Bolshevik who had been sent by Lenin, quickly seizing power and establishing a revolutionary government.