Later on, more liberal government policies were put into place; daimyo and officials were encouraged to take more ronin into their service as samurai. However, this option only could serve a minority of ronin; in an era of peace, few clans needed the large number of samurai that they would need in times of war.
The atomic bomb was not invented by any country, it was  invented in 1933 by Leo Szilard (he was in London at the time, so  when he patented the invention he sold it to the â¦ British Admiralty  who classified it to keep the idea away from the Nazis).
There was no doubt in the minds â¦ of physicists, many of whom were refugees from the Nazis, that Hitler would use an atom bomb if he obtained one. Accordingly the United States, Britain and Canada jointly developed the first atomic weapons in what was called the Manhattan Project.here was a gigantic effort by the US to develop the Atomic Bomb (The Manhattan â¦ Project). This project used hundreds of scientist and thousands of people to develop the first Atomic Bomb.