it is called the Assembly line. they manufacture parts in different factory then put it together in the main one
Fear, public execution, propaganda. Many methods, these are the most common of which.
https://en.wikipedia.org/wiki/English_Reformation
The Manhatten project was the effort by the United States government to develop the first atomic bomb during the second world war, starting in 1942. The project involved the efforts of many famous physicists, notably Oppenheimer, Einstein, and Feynman and took place at the government research centre in Los Alamos, New Mexico.
The project was ultimately successful in 1945, and resulted in the creation of the first two deployed nuclear weapons: Fat Man and Little Boy.
Assistance on the project was provided by the governments of Canada and the United Kingdom.