Baekje or Paekche (18 BCE – 660 CE) was a kingdom located in southwest Korea. It was one of the Three Kingdoms of Korea

Three Kingdoms of Korea

The Three Kingdoms of Korea refer to the ancient Korean kingdoms of Goguryeo, Baekje and Silla, which dominated the Korean peninsula and parts of Manchuria for much of the 1st millennium...

, together with Goguryeo

Goguryeo

Goguryeo or Koguryŏ was an ancient Korean kingdom located in present day northern and central parts of the Korean Peninsula, southern Manchuria, and southern Russian Maritime province....

 and Silla

Silla

Silla was one of the Three Kingdoms of Korea, and one of the longest sustained dynasties in...

.

Baekje was founded by Onjo

Onjo of Baekje

Onjo was the founding monarch of Baekje, one of the Three Kingdoms of Korea. According to the Samguk Sagi, he was the ancestor of all Baekje kings.- Background :...

, the third son of Goguryeo's founder Jumong and So Seo-no

So Seo-no

Soseono was the wife of King Dongmyeong , and remembered as a key figure in the founding of both Goguryeo and Baekje...

, at Wiryeseong

Wiryeseong

Wiryeseong was the name of two early capitals of Baekje, one of the Three Kingdoms of Korea. Both are believed to have been in the modern-day Seoul area...

 (present-day southern Seoul

Seoul

Seoul , officially the Seoul Special City, is the capital and largest metropolis of South Korea. A megacity with a population of over 10 million, it is the largest city proper in the OECD developed world...

). Baekje, like Goguryeo, claimed to succeed Buyeo

Buyeo kingdom

Buyeo or Puyŏ , Fuyu in Chinese, was an ancient Korean kingdom located from today's Manchuria to northern North Korea, from around the 2nd century BC to 494. Its remnants were absorbed by the neighboring and brotherhood kingdom of Goguryeo in 494...

, a state established in present-day Manchuria

Manchuria

Manchuria is a historical name given to a large geographic region in northeast Asia. Depending on the definition of its extent, Manchuria usually falls entirely within the People's Republic of China, or is sometimes divided between China and Russia. The region is commonly referred to as Northeast...

 around the time of Gojoseon

Gojoseon

Gojoseon was an ancient Korean kingdom. Go , meaning "ancient," distinguishes it from the later Joseon Dynasty; Joseon, as it is called in contemporaneous writings, is also romanized as Chosŏn....

's fall.

Baekje alternately battled and allied with Goguryeo and Silla as the three kingdoms expanded control over the peninsula.