How eid the united states became a world superpower in early twenties century (1900 to 1919)

To the best of my knowledge, the USA of 1900 to 1919 was not strictly a superpower. It's situation can be compared to that of China, it's economy is one of if not the biggest in the world and it has lots of resources to keep the economy going. By the end of World War 1, the US had a very powerful military, theoretically making it a superpower. In reality though, it was not, because the military was shrunk to the point of uselessness almost immediately after World War I, which is why wemanaged to lose and not Advanced much at the start of World War II.

Cities with shipyards decline because so many ships had been sent overseas

Answer: tokugawa ieyasu (徳川家康, january 31, 1543 – june 1, 1616) was the founder and first shōgun of the tokugawa shogunate of japan, which effectively ruled japan from the battle of sekigahara in 1600 until the meiji restoration in 1868.