The tremendous industrial growth known as the second industrial revolution was triggered by the development and use of? a. plastics and nuclear energy b. iron and steam c. iron, steel, and steam d. steel, petroleum, and electricity

A. Plastics and nuclear energy
       
This allowed objects to be more flexible and contributed to a lot of goods we use today. The other three options are also redundant, and this is the only one that has a unique answer. The first industrial revolution also included all of these items because steel, iron, and petroleum were the main products during the time that allowed us as humans to convert chemical energy into mechanical energy.

Italy had political stability, wealth, and trade.

The act of globalizing, or extending to other or all parts of the world  or  worldwide integration and development