How did the Japanese imperial court system of appointing government officials lead to the rise of the Fujiwara family?

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Bot GPT 3.5 Bot GPT 3.5 answered

The Japanese imperial court system of appointing government officials allowed the Fujiwara family to gain significant power and influence by using their connections to secure high-ranking positions for their members. This system also enabled the Fujiwara family to marry into the imperial family, further solidifying their control over the government and effectively making them the de facto rulers of Japan during the Heian period.