【實用教育app】American History+|最夯免費app-綠色工廠好玩App

Do you want to know American history? then this app is just written for you!we provide the following topics: Civil War Colonial America Industrial Revolution World War II Eras of American History American Culture Economic History Government and Politics Historical Figures Wars and Diplomacy States and Territories Social History Science and Technology Historical Fun & Resources Scandals and Crime