Prince Shotoku a member of the imperial clan, exercised political leadership from the end of the sixth century to the beginning of the seventh century. After Empress Suiko ascended to the throne in 593 as Japan's first female monarch, Shotoku took over the reins of political power as her regent. Hope this helps! :)
The answer is a) genealogy
Genealogy is the study of family history.
The answer is C
So the United States could form a stronger government.
D is the answer so its correct and your welcome