On September 1, 1939, German troops invaded Poland, officially kicking off what would later be called World War II.

After World War I, due to the disintegration of the three major European empires: the German Empire, the Austro-Hungarian Empire, and the Russian Empire, various ethnic minorities in their territories became independent one after another, such as Czechoslovakia, Finland, Yugoslavia, and Poland.

The European situation formed is called the "Versailles System". Among them, the Second Republic of Poland has a population of approximately 27 million and a territory of 38

Thousands of square kilometers, ranking sixth in Europe and one of the largest countries in Eastern Europe. However, as Germany and the Soviet Union gradually recovered from the trauma of World War I and the Civil War, these emerging small independent countries deeply felt the

Faced with the threat of the two European powers, and at the same time that its own national strength was not strong enough to fight against it, Poland began to look for allies to ensure its own security, and Poland began to seek support and help from the Yin and Fa countries.

Although Yin and Fa are traditional allies and fought side by side against Germany in World War I and during the Russian Civil War, they responded differently to Poland's request. Yin was unwilling to go too far in order to maintain the balance of power in Europe.

Weakening Germany will make Germany stronger, so Poland's request is rejected.

Absolutely. The Yin people think that Poland is an ally of the Fa people, which is of no benefit to the Yin country itself, and Poland's foreign policy is largely influenced by the Fa people. In other words, if France abandons Poland, the latter will lose control of the country on the European continent.

Even if it loses its only powerful ally, Poland will also be militarily isolated and helpless.

The other small countries on the European continent, Yugoslavia, Czechoslovakia and Romania, formed the so-called "Little Entente".

In the process of seeking allies from neighboring countries, Poland also wanted to join its alliance, but was rejected by the Czech Republic, so it held a grudge. The two countries instigated ethnic minority conflicts in their territories, with the Czech Republic inciting Ukrainians in Poland, and Poland

It encouraged the Slovaks in the Czech Republic to oppose the Czechs. Around the Polish territory, only Romania has always maintained good relations with it. In March 1921, it even signed an alliance treaty to deal with the threat from Russia.

Germany's level of hostility towards Poland is even higher than that of hostile countries such as Yin and Fa. The reasons include Yin's attitude toward Germany turning tolerant, and Fa's military thinking turning to a defensive nature, so it is not easy to start another war. Moreover, in one

At the end of the war, Germany only lost the two provinces of Alsace and Greene, which had changed hands with it many times in history.

The ethnic composition of the country is complex and it is difficult to determine its ownership. However, in the case of Poland, Germany lost Silesia, an important industrial coal-producing area, and ceded Danzig, a purely German city, and the "corridor area" to Poland, which was nominally

Becoming an independent "Libreville" separated Germany from East Prussia, severely restricting Germany's development. World War I

As a result, Germany lost 13% of its territory and 12% of its population during the imperial period, of which Poland was partitioned the most. Seckter, who was born in the east of Germany, hated Poland even more. He once said: "The existence of Poland is intolerable and is incompatible with Poland."

Germany's own needs are irreconcilable, Poland must perish, and will perish." Joseph, Prime Minister of the Weimar Republic

22;; Weiers once openly stated that "Poland must be punished", and Prime Minister David Law and George also once said: "Poland has been given too much, and it will cause big trouble in the future."

Starting in June 1926, Germany began a tariff war against Poland, propagated revanchism and encouraged separatist movements among German expatriates in Poland.

On March 31, 1939, the Polish government received a guarantee from Britain that it would maintain the integrity of Polish territory; on April 6, Becquerel went to London to sign the "British-Polish Security Guarantee Treaty"; on May 10

On the 9th, Poland signed a similar protocol with France, stating that when Poland was attacked, the French army would attack Germany. Similarly, when France and Belgium were attacked by Germany, Poland

It would also attack the latter. On the 28th of the same month, Hitler announced the abolition of the German-Polish Non-Aggression Pact on the grounds that Poland accepted the protection of Britain and France, and ordered the German army to prepare to attack the country before the end of August.

During this period, as the time was getting closer to the autumn rain season that could protect Poland, it could not be delayed any longer, and Hitler understood that if the invasion time was changed, the action would be delayed for several months.

The Kingdom of Hell and Poland simultaneously hinted to Berlin that they were willing to resume negotiations on the Danzig and Corridor issues. Hitler tried to prevent Britain and France from intervening in the upcoming war. During the negotiations, Hitler believed that it was unlikely that the Western Allies would declare war on Germany, and

I think they are also looking for ways to get rid of the previous territorial guarantee to Poland. In view of the early attitudes of Yin and Fa, Hitler believed that Yin and Fa would conquer Germany.

After Poland, he was willing to renegotiate and eventually reach a result that was beneficial to Germany. Therefore, he continued to try to divide the Western Allies and Poland. At the urging of the Yin people, Germany issued its last diplomatic statement on August 29.

, at the same time, the timetable of the "White Plan" must be revised. That night, the German government responded. In addition to protecting the German ethnic minority in Poland, Germany also wanted to regain Danzig.

As well as the Polish Corridor (previously Hitler only asked for a highway to be built in the corridor, but now he wants to obtain the entire corridor), Hitler has now decided to launch a real war. Therefore, there is a proviso: the Polish plenipotentiary who comes must be in

arrived in Berlin in one day to sign an agreement. The British Chamberlain cabinet was still pleased that negotiations could continue, but if German regulations were taken into account

The Polish plenipotentiary had to arrive within one day. This difficult-to-achieve time limit also meant that this was Germany's ultimatum. In the early morning of August 31, Ribbentrop read out Germany's Sixteenth Anniversary to the British Ambassador.

A request was made, and when the British Ambassador Neville Henderson requested that a copy of the document be forwarded to the Polish government, Ribbentrop refused on the grounds that "the Polish representative failed to arrive before midnight."

Soon, German radio announced that Poland had vetoed the German proposal and the negotiations were terminated. At four o'clock in the afternoon, Hitler decided to schedule the attack to begin at 4:45 on September 1.

On September 1, 1939, Hitler issued an attack order, and Germany's 1.5 million steel lions rumbled across the border into Poland, and war broke out.

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