To build a solid foundation for study, you need to be familiar with related terms.
It also includes a quiz to test common sense of Korean history.

[Recommended for these people]
If you are interested in studying Korean history,
Candidates preparing for civil service exams,
It is recommended for all students who are educated after becoming adult.

[Developer word]
Paid apps have ads removed and available offline (with some features).
Do not exchange data between paid and free apps

If you are a burdened paid app
Please use the free app.

To provide high quality content and maintain the server
The free app inevitably contains numerous ads.

Do not exchange data between paid and free apps