Complex sentence: Fraudulent articles grew popular through social media sharing sites during the 2016 presidential election in the United States, and most of the deceptive pieces were written by teenagers operating out of a small town in the country of Macedonia.
Split into simpler sentences: Fraudulent articles grew popular through social media sharing sites during the 2016 presidential election in the United States. A large number of the deceptive pieces were written by teenagers operating out of a small town in the country of Macedonia.