Final answer:
Yellow journalism is a sensationalist style of reporting that prioritizes catchy headlines over factual reporting. It had a significant impact on media and society by increasing newspaper circulation and influencing public opinion during the Spanish-American War.
Step-by-step explanation:
Yellow journalism refers to a sensationalist style of reporting that emphasizes eye-catching headlines over factual reporting. It was popularized by media magnates William Randolph Hearst and Joseph Pulitzer during the Spanish-American War in the late 19th century. Yellow journalism had a significant impact on media and society by stirring up public emotions, increasing newspaper circulation, and influencing public opinion. It contributed to the agitating for war and the rise of sensationalized news coverage.