Answer:
Because he used simple language that was easily understood by ordinary people.
Step-by-step explanation:
Thomas Paine decided to write to the common man, allowing the entire population, regardless of his level of academic education, to identify with his words and support his arguments. For this reason, he used a very simple and objective language, but very efficient in establishing a point of view and promoting supporting information. This made it reach a wider audience than other writers of the time.