Rurik vs Yelu Abaoji

According to tradition, Rurik sent his lieutenants Askold and Dir to raid Constantinople. While the historicity is uncertain, this event is associated with the first Rus' attack on the Byzantine Empire, highlighting early Rus' expansion.

According to the Primary Chronicle, Rurik, a Varangian chieftain, was invited by Slavic and Finnic tribes to rule over them. He established his capital at Novgorod, founding the Rurik dynasty that would rule Kievan Rus' and later the Tsardom of Russia until 1598.

Rurik consolidated his rule over Novgorod and the surrounding territories, suppressing a rebellion led by Vadim the Bold. He established a centralized authority that became the basis for the early Russian state.

Yelu Abaoji was elected khagan of the Khitan tribes, unifying them under his leadership. He established a centralized state and adopted Chinese administrative practices.

Yelu Abaoji proclaimed himself emperor, founding the Liao dynasty. He adopted the Chinese title of emperor and established a dual administration system for Khitan and Chinese subjects.

Yelu Abaoji ordered the creation of a writing system for the Khitan language, based on Chinese characters. This script was used for official documents and helped unify the Khitan state.

Yelu Abaoji led a campaign that conquered the Korean kingdom of Bohai, incorporating its territory into the Liao empire. This expanded Liao's influence into Manchuria and Korea.

Yelu Abaoji died while returning from the conquest of Bohai. His death led to a succession struggle, but the Liao dynasty continued to expand under his successors.