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World War II

Use this dataset to learn about World War II's most important events.
a data set by WorldExplorer
created May 18, 2017
ImageStart DateEnd DateEventOutcomeAllied PowersAxis PowersLocation
July 18, 1925Mein Kampf is publishedAdolf Hitler writes his autobiographical book outlining his political ideology and plans for GermanyN/AGermanyGermany
September 18, 1931Japan invades ManchuriaUndermines the League of Nations and proves that it is powerless in the face of aggressionN/AJapanManchuria, China
September 30, 1938The Munich PactA settlement allowing Germany to annex the Sudetenland, the German-speaking part of CzechoslovakiaUK, FranceGermany, ItalyCzechoslovakia
January 30, 1933Hitler comes to powerAdolf Hitler becomes the Chancellor of Germany and the Nazi Party takes control of the countryN/AGermanyBerlin, Germany
October 25, 1936The Rome-Berlin Axis TreatyNazi Germany and Fascist Italy form a treatyN/AGermany, ItalyBerlin, Germany and Rome, Italy
March 12, 1938AnschlussGermany annexes Austria and becomes a federal state of GermanyN/AGermanyVienna, Austria
March 28, 1938The Spanish Civil war endsThe country falls into the hands of fascist dictator Francisco FrancoN/ASpainMadrid, Spain
November 9, 1938Kristallnacht"The Night of Broken Glass"--German civilians and paramilitary forces start violent riots targetting Jewish civilians and business; marks the beginning of the Final SolutionN/AGermanyThroughout Germany
April 9, 1939Germany invades Norway and DenmarkDenmark surrenders immediately and a puppet government is installed in NorwayN/AGermanyDenmark, Norway
August 23, 1939Molotov–Ribbentrop PactNazi Germany and Soviet Russia sign a non-aggression pact, establishing borders and outlining that neither would help each other's enemiesN/AGermany, USSRMoscow, Russia
September 1, 1939Germany invades PolandThe British issue an ultimatum demanding Germany's withdrawl and Germany refuses; World War II beginsN/AGermanyPoland
September 3, 1939Britain and France declare war on GermanyThe British begin by targeting German warships and dropping anti-Nazi propoganda over German citiesBritain, FranceGermanyGermany
November 4, 1939The Neutrality ActCommits the US to Neutrality while also allowing it to sell arms to the Allied PowersUSAN/AWashington D.C., USA
November 30, 1939Winter WarThe USSR invades Finland, which spurs Finnish resistance against the USSR; Finland scedes border areas in the following Moscor Peace TreatyFinlandUSSRHelsinki, Finland
May 7, 1940Winston Churchill becomes Prime MinisterNeville Chamberlin resigns in disgrace and is succeeded by Winston Churchill soon after, signalling a change towards a more active foreign policyUKN/ALondon, UK
May 10, 1940The Blitzkrieg beginsGermany begins its "Lightning Warfare"; the Netherlands, Belgium, and Luxumbourg soon surrender N/AGermanyRotterdam, the Netherlands
May 10, 1940June 25, 1940Battle of FranceAxis victory; the French government requests aid from the United States, which is declined and the Germans enter Paris soon afterFrance, UKGermanyParis, France
July 10, 1940October 31, 1940Battle of BritainThe Royal Air Force defends England from the German Luftwaffe; Germans failed to gain air control over EnglandUKGermanyUK
September 27, 1940Tripartite PactGermany, Italy, and Japan enter a ten year military and economic alliance known as the "Axis" N/AGermany, Italy, JapanBerlin, Germany
May 26, 1940June 4, 1940Battle of DunkirkGerman victory; Allied forced are forced to withdraw to BritainUK, FranceGermanyDunkirk, France
October 29, 1940The military draft begins in AmericaThe first time a military draft occurs during peace time in the United StatesUSAN/AWashington D.C., USA
April 6, 1941April 30, 1941Battle of GreeceGermany invades Greece and Yugoslavia; Axis victoryUK, GreeceGermanyGreece
June 22, 1941December 5, 1941Operation BarbarossaGermany breaks its non-aggression pact with the Soviet Union and invadesN/AGermany, USSRUkraine
September 29, 1941Babi YarThousands of people are killed in a massacre by Germans against Jews, Roma, and political dissidentsN/AGermanyKiev, Ukraine
December 7, 1941Attack on Pearl HarborJapanese forces attack the US military base at Pearl Harbor; 2,300 Americans are killed and the USA declares war against Japan the next dayUSAJapanOahu, Hawaii, United States
December 11, 1941Germany and Italy declare war on the United StatesIn retaliation, America declares war on Germany and Italy, ending its neutrality in EuropeUSAGermany, ItalyWashington D.C., USA
February 19, 1942Executive Order 9066Roosevelt signs an executive order, ordering the internment of over 100,000 Japanese-AmericansUSAN/AWashington D.C., USA
July 10, 1942Battle of MidwayUS forces inflict extensive damage on the Japanese naval fleet; considered a turning point in the Pacific WarUSAJapanMidway Atoll
January 7, 1942April 9, 1942Battle of BataanJapanese victory; results in the Bataan death march, in which thousands of Filipinos are killedUSAJapanPhilippines
August 23, 1942 – February 2, 1943Battle of StalingradConsidered to be one of the largest and bloodiest battles in history; German forces are forced to retreat from their invasion of the USSRUSSRGermanyVolgograd, USSR
December 2, 1942Manhattan ProjectThe Manhattan Project begins; the first controlled nuclear-chain reaction is developedUSAN/AOak Ridge, Tennessee, USA
July 10, 1943Operation HuskyThe Allies invade and take control of SicilyUSA, UKItalySicily, Italy
February 8, 1943Guadalcanal CampaignBeginning of the Pacific Allied offensive; Allied forces capture the Solomon Islands and it is considered a turning point in the Pacific theaterUSA, UKJapanSolomon Islands
September 3, 1943September 17, 1943Allied Invasion of ItalyThe Allies invade Italy and take control of the South; Mussolini sets up a government in Northern ItalyUSA, UKItalyItaly
June 6, 1944D-DayAllied victory; an Allied invasion in Normandy that helps contribue to Allied victories on the Western frontUSA, UKGermanyNormandy, France
August 25, 1944Liberation of ParisAllied forces capture and liberate ParisUSA, UKGermanyParis, France
December 16, 1944 - January 25, 1945Battle of the BulgeThe last major German counteroffensive on the Western Front; results in an Allied vicoty, though it creates the most American casualtiesUSA, UKGermanyLuxembourg and Belgium
January 27, 1945Auschwitz is liberatedSoviet troops liberate Auschwitz, only to find 3,000 survivors; this day is late designated as Holocaust Remembrance DayUSSRGermanyAuschwitz, Poland
February 13, 1945Bombing of DresdenAllied troops conduct extensive bombing on the German city of Dresden; Allied victory USA, UKGermanyDresden, Germany
April 21, 1945Battle of BerlinSoviet troops reach Berlin and take over the cityUSSRGermanyBerlin, Germany
April 30, 1945Hitler's DeathWith Soviet forces in Berlin, Hitler commits suicideN/AGermanyBerlin, Germany
May 8, 1945V-E DayVictory in Europe Day, marking the end of World War II in Europe; Germany unconditionally surrendersUSA, UK, USSRGermanyBerlin, Germany
June 22, 1945Battle of OkinawaAllied victory; Okinawa is occupied by the United States until 1972USA, UKGermanyOkinawa, Japan
August 6, 1945August 9, 1945Atomic bombings of Hiroshima and NagasakiThe United States drops the first ever nuclear weapons on the Japanese cities of Hiroshima and Nagasaki; 129,000 people are killed USAJapanHiroshima and Nagasaki, Japan
September 2, 1945Japan surrendersJapan formally surrenders; World War II comes to an endUSA, UKJapanTokyo, Japan
April 25, 1945The United Nations is foundedThe United Nations is formed as a replacement for the League of Nations, in order to prevent another conflict such as World War IIN/AN/ASan Francisco, California, USA
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