Sources are used in a paper to show what ideas inspired you and whose theories you would be using and you cite the sources in order to avoid plagiarism. If you don't have sources, your paper will not be valid and you could get accused of plagiarism. The more sources you use the better but you should keep in mind that they need to be important for the paper and used with a purpose and not just to increase the number of sources.
The freedom of press allows a citizen of the US to express their own opinions or beliefs freely on the press ( ex: newspaper, news stations, etcetera). The freedom of press is good , for one is able to express their thoughts freely without being harmed for one's own opinion. For example, nation's such as North Korea does not allow the people to express their own opinions,and the people of North Korea aren't happy. Freedom of press is important to the US, because everybody gets to voice their own opinions
Hope this helps
I do not know what your asking
Economic freedom<span> or </span>economic liberty<span> is the ability of members of a society to undertake economic actions. </span>