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.
IF the options are what I think they are then the state that best describes an economic trend that shaped the end of the 20th century is m<span>ore of the products sold in the US were manufactured in foreign countries.
Hope this helped :)</span>
John Calvin was a French theologian, creator of Kalvinism and the Protestant reforms.
After Calvin was in Geneva for the second time in 1539, Calvinism began to flow and his disciples began to listen to him.
They began to implement their ideas since in Geneva it became the first school of preparation of leaders of Calvinism in 1559. until reaching 1600 people there expanded to Scotland and France to the point that CALVINISM came to have more than 3 million people
On September 17, 1787, the Constitution was signed. The Constitution is known to be written by James Madison but is usually credited to other people who had similar ideas for the Constitution.