What caused the outbreak of World War II? The answer is the rise of Germany.
After World War I, Britain and the United States formed the League of Nations and punished Germany, but to be honest, although Germany was punished, Germany rose rapidly after World War I.
The point is that when the rise came, the Americans did not speak, and the British, as the world leader after the First World War, did not speak, in fact, after the First World War, it seemed that Britain was the leader of the world, but it was the United States that was really powerful, and as a result, the Germans were ready to challenge Britain again.
Why the challenge? What seems to be the challenge is status, but in fact it is interests. Status and power often imply the right to distribute benefits.
Before the outbreak of World War II, Germany's economy was the second largest in the world after the United States. With an average annual economic growth rate of 20%, Germany has gone from having the world's highest fiscal deficit and unemployment in the post-World War I period and on the verge of bankruptcy to becoming one of the world's top economic powers.
Germany also has a complete industrial system, especially the military industry is extremely rapid, with the world's most advanced military technology at that time, tanks, artillery, aircraft to individual soldiers, arms production exceeds the British and French combined.
As for the output of various industrial products such as steel and coke, it is also among the best. For details, please refer to "How Strong Was Germany's Military Strength in World War II?" It mentions steel production, which is the first in Europe.
Why is coke important? Because steelmaking is used, having coke means that high-speed rail can be produced continuously, and World War II itself is both an industrial system and steel production.
Before the war, Germany had universal upper secondary education and was the first country in the world to achieve universal higher education.
Education in Germany has provided a large number of talent support for the country's economic development, and many world-class scientists, such as Heisenberg, Hahn, von Braun, Einstein, etc., have come from Germany. These scientists have made outstanding achievements in their respective fields and have contributed to the scientific and technological progress and economic development of Germany.
In general, the reason why World War II broke out was because of the rise of Germany, which became the second largest in the world, but Britain and France always thought about the leader's family, which naturally made Germany unhappy, and they themselves also had the strength to fight a war, which was nothing more than looking for a country to test the world's reaction.
It is said that after the German blitzkrieg on Poland, Great Britain and France as allies of Poland, although they verbally proposed **, and on the third day of the German blitzkrieg on Poland, that is, on September 3, 1939, declared war on Germany under the Covenant. However, the two countries did not engage in substantive military action during the next 36 days of the Polish campaign, so to speak, and sat back and watched Poland fall.
And the United States, as the strongest economy in the world, does not care about the state, and is thinking about how to make war money, that is, to sell **. As a result, the war became more and more fought, turning from a local war into a world war.