Football and hockey is an incomplete sentence because there is no verb.
Hello. You did not inform the article to which this text refers, which makes it impossible for your question to be answered. However, I will try to help you in the best possible way.
To support the idea that a storm was the worst sight in all of America, the author must present information to support this argument. Therefore, the author must have shown meteorological data that show the intensity of the storm and compare it with other storms. In addition, the author must show the destructive power of the storm, presenting the damage it caused to the American population.
“—a thoroughbred horse or hound is worth more than a score of them.”
Examples, one with a comma and one without:
Shakespeare was born in Stratford and went on to write Hamlet.
Shakespeare was born in Stratford, later writing Hamlet
