I thought I knew what this answer was but ha guess not!!!
The answer to this question would be A. the European countries were always trying to become the most powerful in the world.
Answer:
Although created as a control mechanism, the sankin kotai helped transform Edo into a metropolis and truly a uniting center for the Japanese people. Other additional benefits of the system were the ensured peace by keeping feudal lords in subjugation (Tsukahira, 137).
Explanation: