The use of mass communication to speak to american citizens.
The reason why English is spoken in so many places worldwide even though England is so small, is because England once had that greatest (largest and most extensive) empire in the world, meaning that English customs and language were spread to most of its colonies, including the United States.
Yup, that is indeed true. The Safavids were Sunni Muslims.
Calvins doctrines and theology created profound changes within the fledgling protestants churches.