Why is American space technology developed?

P2744 15' s answers are all blowing, all based on the current situation. In fact, if the United States relies on the system to win, why can't the European Union do so? Why did Russia surpass the United States several times?

In fact, the United States took off quickly and unscathed in World War II, while Britain consumed almost all foreign exchange in World War II and declined rapidly, leaving Germany in ruins. In this way, due to the freedom advocated by the United States, some German scientists with the most advanced level in the world risked their lives to escape the Soviet route and surrender to the American troops on the other side at the end of World War II (the SS was very strict with scientists). This is what wernher von braun did. By the way, he took away a lot of experimental data. After the war, a large number of British technicians immigrated to the United States. Many technologies, such as supersonic aircraft technology, started in Britain as early as 1942, but they really couldn't spare the energy, so they gave the technology to the United States (by the way, this supersonic plan was much more advanced than the later American X- 1 because the power was turbojet).

The purpose of investment itself is technology, which directly brings experimental technology from other countries, not to mention direct immigrants. For example, when Qian Xuesen came, the American media actually said that he had taken away the experimental data. In fact, the essence of engineering technology lies in thinking, and the quality of personnel is more precious than any experimental materials.

And history is not determined by "potential". Sometimes one person can change history, just like the former Soviet Union launched intercontinental ballistic missiles and satellites with backward technology and inferior technical foundation to the United States. In fact, it is thanks to a few people, such as korolev, the chief engineer, who boldly used the bundled main engine as rocket power. This is because they have not fully mastered the technology of rocket high-altitude rapid ignition. According to conventional thinking, this means that they can't launch intercontinental rockets. But the Soviets just bypassed it with their plans! ! ! !

It can be seen that the development of American space technology cannot be separated from high-quality skilled immigrants.