1 November Beginning of Polish-Ukrainian War over Lwów and Eastern Galicia.
7 November 'Provisional People's Republic of Poland' set up in Lublin under the Galician socialist, Ignacy Daszyński, but quickly superseded by events in Warsaw.
11 November An independent Polish State proclaimed (later officially designated National Day of Independence); Jósef Piłsudski appointed commander-in-chief of Polish armed forces.
14 November Piłsudski appointed provisional head of state.
18 November First Polish Government established under moderate socialist Jędrzej Moraczewski.
22 November Poland declared a republic.
23 November Moraczewski government introduces a broad range of social reforms, including the eight-hour day.
27 December Anti-German Polish Rising in Poznań and western Poland.
5 January Beginning of Polish-Soviet War in Wilno region.
23 January Czechoslovakia reneges on diplomatic agreement with Poland and seizes the disputed area of Cieszyn.
26 January Elections for a Constituent Sejm.
20 February Provisional (small) constitution approved; Piłsudski confirmed as head of state.
28 June Treaty of Versailles, signed on behalf of Poland by Ignacy Paderewski and Roman Dmowski.
20 July Lwów and Eastern Galicia secured by victory of Polish forces.