World War II is the most grand war in human history, during which a total of 61 countries and regions were put into battle, and caused 90 million military and civilian casualties and 5 trillion US dollars in losses, as the initiator of the war, Nazi leader Hitler was accused and scolded by countless people, and the biography of Hitler described by some French and British writers described it as a useless, crazy person who would only fantasize all the time, this is indeed biased, although Hitler is a war demon, there is no doubt about it. But as the only fuehrer of the three fascist countries to come to power by popular election rather than a coup, Hitler certainly had his own capabilities.

After the first world war, the Germans lost all their overseas colonies and one-tenth of the population, industry was seriously hit by the war, and the Ruhr area, the heart of German industry, was jointly occupied by France and Belgium. The war reparations demanded by the Allies against Germany were also as high as 226 billion marks, and had to be paid in gold, albeit for decades, which was also a great burden on the German economy.
The Great Depression that swept the world in the 1930s brought German discontent to its peak, with a large number of factories closing down and countless people unemployed, waiting for the helpless German government relief, and in 1933, Germany already had 6 million unemployed people.
It was in such a turbulent and nationalistic era that Hitler stepped onto the stage of history, and one of the most important promises he made in his campaign was to restore and revitalize the German economy, and it turned out that Hitler did this, and after Hitler became Chancellor of the Reich in 1933, he took the lead in reorganizing the national economy and accelerating the gathering and concentration of capital production, and he adopted the same approach as US President Roosevelt, forcibly involving the government in the control of the economy. The Nazis imposed harsh criminal laws in the economic sphere to ensure that speculation and monopoly of goods were eradicated.
At the same time, Hitler re-established exchange controls and set up factories, which solved the employment problem of many people, and before the German war in 1939, only a few tens of thousands of unemployed people remained. After two four-year plans, Nazi Germany's economy had improved considerably, with a GDP of about 73.7 billion Reichsmarks in 1933, and by 1938, germany's GDP had tripled to 126.4 million. Therefore, it is tempting to ask, if Hitler only developed the economy and did not invade, then could Germany become a world superpower?
The answer is of course no, Hitler can not not start a war, frankly speaking, the treaty signed in the First World War, for Germany is extremely unequal, he lost a lot of important territory, France and other powers in fact the original intention is to hope that Germany will never be able to raise their heads, limiting Germany's prospects, which naturally also stimulated the dissatisfaction of the Germans, Hitler's policy of coming to power, the most important thing is to regain the glory of Germany's past, which also makes the Germans extremely important, and in germany to restore the economy, Among the unemployed, the military industry accounts for a huge proportion, so many aircraft cannons, so many military personnel, only war can earn back their own costs. Therefore, Germany's recovery is actually premised on foreign expansion.
Hitler naturally realized this, but at the time of the war, the treatment in Germany was very good, coupled with his impassioned speeches seduced many young people, although by the time of World War II Hitler had become a dictatorship, but his support rate was still high, and the short rise made the Nazi government under Hitler's leadership overdraw too much potential, so starting a war became their inevitable choice.