During World War I and World War II, this part of the United States was remote, and although it participated in the world war, it suffered less damage. First of all, because the main battlefield is not in the United States mainland, secondly, during the First World War, the United States made a windfall, provided weapons and equipment to both sides of the war, stimulated the development of heavy industry in the homeland, and he also issued a wide range of loans, with Britain and France the most, and became the world's largest creditor country and the country with the largest gold reserves in just a few years.
After the various theaters of World War II began, the United States was still waiting and watching, openly neutral, but in fact it was the best time to measure when to join the war, so as to gain the greatest power to reshape the world order after the war. At this time, the Japanese thundered on the ground and sneaked into Pearl Harbor, which undoubtedly gave the United States the best excuse. Since then, the United States has entered World War II.
When the news of the Pearl Harbor incident came, Europe and Asia were extremely shaken, and this incident would undoubtedly have a major impact on the world war situation. It is said that when Hitler heard about it, he scolded the Japanese as pigs and said that their recklessness would eventually lead them to suffer their own evil consequences.
We know that in the early days of the war between the United States and Japan, the United States did not have the upper hand, so why would Hitler say such a thing? At that time, Japan opened several successive battlefields in East Asia and Southeast Asia, and then provoked the United States, and it was bound to need a strong support force, but Japan was only an island country, the population was only half of that of the United States, and the industrial output value was only a fraction of that of the United States, and because of the war in the previous few years, its strength was even reduced.
But the japanese do not lack the most courageous, the spirit of Bushido prevails in the country, they believe that the emperor will always protect them, invincible. At this time, the United States did not invest a lot of money in the development of military equipment, but several fiascoes in the early days of the war stimulated their national sentiment, so they began to develop military strength, because of the wealth accumulated during the First World War, they developed rapidly, so it can be said that at the beginning of the war, the Japanese side has been doing subtraction, the power has been weakening, and gradually the backup can not keep up, and the United States is doing addition, the power is weak and strong, slowly tapping the burst of potential, and finally ending with Japan obediently surrendering.
During the world war, the United States gained a respite, vigorously developed its national strength, and slowly grew into a world power. At this time, Japan not only had poor conditions in itself, but also consumed a lot of war for many years, and it was obviously irrational to provoke the United States at this time.