The Manhattan project was a secret project that's developed by United States in 1942. The main goal of this project was to create the first weapon of mass destruction that utilize nuclear energy.
Initially, USA tried to keep this a secret from the Soviet Union.
But the project was leaked to the Soviet Union by Julius and Ethel Rosenberg who were recruited as Soviet's spy. Ethel's brother David Greenglass worked in Manhattan project and supplied Julius with the information.
One of the major consequences of people migrating from the rural area to the city was that population density rose and living conditions in many cities became very poor.
Author of the Declaration on Independence, Father of Virginia, nearly doubled the size of america, Author of Virginia statue for religious freedom, and president of the united states!
