I think that hosting an international sports event is good for a country. If the Olympics were held in a country, many people relevant to these events visited the country. It has an effect on promoting culture of countries. When people visited the country for the events, people could experience many things in the hosting country. After the Olympics, people would share the experiences and leave the comments of the country. I think that this cycle brings a promotion effect of tourism in the country. For example, Korea was a host country of the Olympics in 2018. Before the Olympics in 2018, Korean government and local government supported for preparing the Olympics, specially building the infrastructure related to the Olympics events and making Korean-style foods adjusted to the tastes of foreigners who visited Korea. After these events, Pyeongchang became one of famous cities in Korea and many tourists visited Pyeongchang up to now.

That's very wonderful.  Thank you for sharing, Min. Your sentences are made very well. No need for any corrections. Well done!