Everyone had clans at one point. Europe was dominated by clans, even in Rome. It was the Catholic church which was a central authority that destroyed the clans in Europe which led to things like rise of capitalism as people didn't just work with their clans but anyone. Business wasn't based on familial ties.
Same with China clans, Korea and Japan had the strongest clan system and Japan went through military Dictatorship called shogun and a bunch of warring clans that fought each other until Europeans came to Japan and forced them to sign Unfair treaties that looted thier resources. The japanese realised if they didn't change they'd get colonised like thier Asian neighbours so Japan brought back the emperor in the imperial restoration in 1860s which slowly destroyed the clan system and Japan became a centralised modern state instead of a bunch of clans managing their plot of land. Japan went from 1600s technology to becoming word class empire that beat Russia in just 50 years.