By the late 300s A.D., one clan in particular began to stand out among all the rest in political power and influence. This clan was known as the Yamato Clan. The Yamato Clan was known for their bravery in battle and their superior fighting techniques. As a result, all other clans within Japan became subject to them. The chief of the Yamato Clan became the first emperor of Japan.
Local clans still ruled their own lands, but they owed their loyalty to the emperor, who by 400 A.D. had become very powerful.
He turns not back who is bound to a star.
Leonardo Da Vince
The Spartans developed a sophisticated method of encoding and decoding military orders using a scroll of paper, and a staff.