In the 19th century, the Second Industrial Revolution began, which spread across Europe, the United States, and Japan. The Second Industrial Revolution is marked by several characteristics because it is an important historical moment for the development of the industry, technological advances and increased productivity. In the case of the United States, we witness an increased development, especially the search for raw materials to supply the industrial demand.
The radiation left after the war. Along with the many people who died thereafter for many years. This also caused a nuclear war of sorts later on with Russia.
