At the beginning of the outbreak of the Second World War, Germany's blitzkrieg against Poland attracted worldwide attention. This military action not only marked the beginning of the Second World War, but also revealed a series of complex historical and political factors. The reasons for Germany's attack on Poland can be traced back to the enmity and geopolitical changes during the First World War.

Firstly, after the end of the First World War, the Treaty of Versailles severely punished Germany. Germany lost a large amount of territory, including the Polish Corridor, which separated East Prussia from the German mainland and became Polish territory. This territorial loss was a major blow to Germany, sparking hostility towards Poland.

Secondly, after the rise of the Nazi Party in Germany, Hitler's expansionist policy made Germany have a strong desire to invade neighboring countries. Hitler believed that Germany needed more living space, and Poland was seen as an obstacle to achieving this goal. Therefore, Germany's attack on Poland was also part of its expansionist policy.

In addition, the collusion between Germany and the Soviet Union was also one of the reasons for Germany's attack on Poland. After signing the Molotov-Ribbentrop Pact, Germany and the Soviet Union reached a secret agreement to divide Poland between them. This meant that Germany did not have to worry about Soviet intervention when attacking Poland.

Finally, Germany's attack on Poland was also part of its military strategy. Germany hoped to demonstrate its military strength by quickly defeating Poland, thereby deterring other countries. At the same time, Germany also tried to quickly end the war through blitzkrieg to avoid getting bogged down in prolonged fighting.

In summary, Germany's blitzkrieg against Poland was the result of a combination of factors such as the enmity and geopolitical changes during the First World War, expansionist policies, and military strategies. This war not only changed the pattern of Europe and the world, but also had a profound impact on human society.

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