What powers did clan leaders lose as a result of the Taika Reform?

The Taika Reform, enacted in 645 AD in Japan, significantly diminished the powers of clan leaders by centralizing authority under the imperial government. Clan leaders, who had previously held substantial political and economic power, were stripped of their autonomy and forced to adhere to a system of bureaucratic governance. The reforms established a merit-based administrative structure, reducing the influence of hereditary leaders and promoting a more centralized state. This shift aimed to unify the country and enhance imperial control over land and resources.