Gojoseon was not merely the first nation of the Korean people.

‌According to research,
after the fall of Gojoseon, a significant number of the royal family migrated to the southern part of the Korean Peninsula,
which led to the rapid development of the culture in the south.
It was heavily influenced by them,
and it is true that Gojoseon was the most powerful and advanced nation on the Korean Peninsula at the time,
exerting a great deal of influence.