Description *Over 1 million copies sold! The No.1 world history learning comic! *Carefully reviewed by history teacher Song Yeong-sim (author of world history textbooks)! 1. Open the 'Door of Time' and travel to Northern Europe! The Lamp Expedition Team sets off on a great world history adventure through the Door of Time, opened by Genie the lamp spirit! Experience thrilling moments in world history as if you were really there. This time, they're off to meet the Viking warriors of Northern Europe. 2. Build your world history knowledge with 'Teacher Sul's History Check'! Curious about something while reading the comic? Don't miss the surprise appearances of 'Teacher Sul's History Check.' You'll gain all kinds of world history knowledge while making the comic even more fun. Thanks to careful review by a world history expert, you'll get even richer information. 3. Understand world history more deeply with 'Teacher Sul's History Talk'! Teacher Sul shares world history stories that couldn't fit into the comic. Listen closely to the stories you've been curious about and deepen your understanding of world history. 4. Explore meaningful places with 'Genie's Time Travel'! We've selected places the Lamp Expedition Team visited that we hope you'll get to visit too. Discover what kind of places they are and what you might see and feel there. 5. Build your world history skills by solving quizzes! Review what you've learned and test your own world history knowledge with the 'Easy-Breezy World History Quiz.' Various history quizzes help build critical thinking and problem-solving skills. 6. Learn by comparing world history with Korean history! Compare Northern European and Korean history through 'Meanwhile, in Korea.' Discover what was happening in Korea while the Vikings were active, building your knowledge of Korean history alongside world history.