Society and every day life in the USA
The Pew Research Center published their population survey results from 2014, which show that about 2014,4% of the population are evangelical Protestants, 20,8% are Roman Catholics, 14,7% are Mainline-Protestants and 6,5% are members of the traditional black protestant church.
Mormons, Jehovah's Witnesses and members of the Orthodox church also exist among the smaller Christian churches. American people who do not follow a Christian religion are Jews, Muslims and Buddhists. 22,8% of the population has also stated that they are not religious.
The USA's constitution is a presidential republic, in which consists of the president as well as the government and state leaders. Donald Trump is the 45th president of the United Stated of America.
Local language and communication
There is no definite official language in the USA. Factually seen though, English is America's national language as it is natively spoken by 82% of the population. Getting to know people is treated with a relaxed and comfortable demeanor. It is common to shake someone's hand quite firmly and say "hello, how are you" when greeting them. When you are asked how you are you can respond with a short "fine and you?" This is a mere greeting procedure and people do not expect you to answer them honestly.