1. Present simple tense: The answer uses the present simple tense throughout (e.g., "play a key role," "attract tourists," "allow people to unwind"), which is appropriate for stating general truths and opinions.
2. Infinitive of purpose: Phrases like "to educate people" and "to unwind and create lasting memories" use the infinitive form to express purpose, making the answer clear and direct.
3. Relative clause: "which can give a real boost to the local economy" is a relative clause that adds detail and explanation to the previous statement, showing a good command of complex sentence structures.
4. Parallel structure: The answer lists several benefits of national events in a parallel way (e.g., "educate people," "allow people to unwind and create lasting memories"), which helps with fluency and coherence.