The commonwealth and the industrial revolution to create a strong middle class lower class monarchy upper class

The Commonwealth and the Industrial Revolution helped to create a strong "middle class", since for the first time there were plentiful jobs available (mostly in the factories) for poor peopler, who were able to accumulate more wealth.

Explanation:

nuclear fission produces the atomic bomb, a weapon of mass destruction that uses power released by the splitting of atomic nuclei the fighting in iwo jima and okinawa affected the allies' pacific strategy because truman decided to drop the atomic bomb on mainland japan.

social contract theory, nearly as old as philosophy itself, is the view that persons' moral and/or political obligations are dependent upon a contract or agreement among them to form the society in which they live