The article says that Yamato expansion into the Korean peninsula from about 350, and Yamato conquered the southern tip of the Korean peninsula where it established a colony.
There is no firm evidence about Yamato expansion, and It must be distorted during the Japanese colonial era.
In the 4th century, Korean peninsula had strong nation, which named Paekche. Paekche had expanded into the ancient Japan.
I hope Britannica should be very careful to write other nations' history, and listen to the both nations' sides of evidence.
This could be needed a lot of efforts to prove the truth; however, I believe that these efforts will be critical to understand the history.
I look forward to seeing the faithful history in the next version of articles.
Thanks.
Seonwon Kim