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Which rival family did Fujiwara Kamatari overthrow in the coup of 645?
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In the coup of 645, Fujiwara Kamatari (then known as Nakatomi Kamatari) and Prince Nakano Ōe (the future Emperor Tenji) overthrew the powerful Soga family.123
The coup was directed specifically at Soga Iruka, the head of the Soga family, who had come to dominate the imperial court and assumed imperial prerogatives. Following the assassination of Iruka and the subsequent collapse of Soga power, Kamatari and the prince implemented the Taika era reforms, which centralized government power and established a system modeled after T’ang China.142