The summary is:
This is a video that covers the history of the Avatar universe from the time of the first Avatar to the events of The Legend of Korra. It mentions the main Avatars, their achievements and challenges, the wars and conflicts that shaped the world, and the changes that occurred in the four nations. It also briefly summarizes the plot of each season of the two shows and some of the comics. The video ends by asking for likes and comments to support the channel.
Here are the key facts extracted from the text:
1. The text is about the history of the Avatar universe, from the time of the first Avatar to the events of The Legend of Korra.
2. The text mentions seven known Avatars: Wan, Kyoshi, Roku, Aang, Korra, and two unnamed ones.
3. The text covers major events such as the Harmonic Convergence, the genocide of the air nomads, the Hundred Year War, the Equalist Revolution, the Civil War of the Water Tribes, and the Earth Empire Crisis.
4. The text also mentions some characters, places, and organizations that are important in the Avatar universe, such as Zuko, Azula, Iroh, Ozai, Tenzin, Kuvira, Ba Sing Se, Republic City, the Fire Nation, the White Lotus, and others.
5. The text uses a timeline based on the year of the air nomad genocide as a reference point. It also uses abbreviations such as DG (during genocide) and PG (post-genocide).
6. The text is based on the animated series Avatar: The Last Airbender and The Legend of Korra, as well as some comics that expand on their stories.