The Road to War, 1931–1941 · THE MAP IN MAR–APR 1939

Map of Europe and Africa in March–April 1939

Prague swallowed; Spain and Albania fall · road to WW2

Europe and Africa in March–April 1939: Prague swallowed; Spain and Albania fall. Since October 1938, 3 territories changed status on this map: Spain, Czechoslovakia (Slovakia) and Albania.

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Map of Europe and Africa in March–April 1939 (road to WW2): Prague swallowed; Spain and Albania fall. Colours show Colonial empires & possessions, The aggressors (Japan, Germany, Italy), Democracies & powers fighting them. — MAR–APR 1939 · THE ROAD TO WAR, 1931–1941

These maps are reconstructed from published sources · Cliopatria v0.2.1 — dated political boundaries · United States Holocaust Memorial Museum — German territorial expansion · IGM Fiume, 1:25,000, sheet53B II SE — boundary established in1924 · Natural Earth — physical reference geography · Yugoslavia (1929–1939) location map — international frontier and Adriatic coast · Treaty of Rome (1924), division of Fiume and west-bank boundary · Murli / rowanwindwhistler — Slovakia border changes, 1938–1945 · United States Holocaust Memorial Museum — The Holocaust in Slovakia · Slovak Nation’s Memory Institute — The First Vienna Award

Source details

Cliopatria contributors / Seshat Global History Databank. CC BY4.0 · Dated polity and constituent territory selections; campaign-dependent occupation overlays reconstructed separately.
United States Holocaust Memorial Museum. Historical dates consulted; no prose or image copied
Istituto Geografico Militare, Fiume (printed1946; 1927 survey with1931–1940 updates), reproduced by Istituto regionale per la storia della Resistenza e dell’Età contemporanea nel Friuli Venezia Giulia. Independent reconstruction from graticule coordinates and boundary observations; archive page reserves artwork rights.. Geographical-fact reconstruction; original archive artwork not distributed
Natural Earth. Public domain
NordNordWest/Wikipedia. Converted from the published SVG to WGS84; eastern Italian regional territory extracted. Source cites Velhagen & Klasings Großer Volksatlas (1938).. CC BY-SA 3.0 Germany
1924 agreement interpreted alongside the regional history institute and City of Rijeka’s explanation of the Donja/Gornja Drenova division.. Historical geographic facts; citation only
Murli; SVG adaptation by rowanwindwhistler (2021). CC BY-SA 2.5; derived geographic paths under the same license · Georeferenced actual published vector regions using eight printed city positions; no map artwork or labels in the atlas.
United States Holocaust Memorial Museum — The Holocaust in Slovakia. Historical chronology consulted; no source prose or artwork republished
Slovak Nation’s Memory Institute — The First Vienna Award. Historical territorial chronology consulted; no source artwork or prose republished

Slovak territory is reconstructed from the published 1938–1945 border-change map, distinguishing the client state from Hungarian and German annexations. Small northern frontier changes and survey-level detail lie outside this regional source. After August 1944, German military occupation supersedes the client-state fill.

The eastern Italian frontier uses the published 1930s regional map and a 1924 Fiume boundary reconstruction. Source conquests after April 1941 remain separately dated.

reconstruction: 1922–1952 · reconstruction: 1936–1939 · reconstruction: 1936–1940 · reconstruction: 1936–1941 · reconstruction: 1936–1942 · reconstruction: 1936–1944 · reconstruction: 1938-10 · reconstruction: 1939 · reconstruction: 1939-03 · reconstruction: 1939.25 · reconstruction: 1939–1939 · vector: 1895–1941 · vector: 1912–1955 · vector: 1918–1941 · vector: 1920–1939 · vector: 1924–1940 · vector: 1936–1939 · vector: 1936–1941 · vector: 1936–1945 · vector: 1936–1986 · vector: 1938–1939 · vector: 1938–1972 · vector: 1939–1939 · vector: 1939–1944 · vector: 1939–2023

Layer records and reconstruction methods

What changes on the map

Spain	At war on its own soil → Aggressor clients & partners
Czechoslovakia (Slovakia)	Democracies & powers fighting them → Aggressor clients & partners
Albania	Neutral & unaligned → The aggressors (Japan, Germany, Italy)

On the ground

Franco’s victory on 1 April 1939 completed Nationalist control of Spain.
In March 1939, the Czech rump became the German “Protectorate of Bohemia and Moravia.”

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