Answer:
Correct answer is shogun .
Step-by-step explanation:
First option is not correct as it refers to an area where someone has a larger authority.
Second option is not correct as samurai is a warrior with a certain code, similar to European knights.
Third option is correct as it refers to military leaders in Japan, who had main role in the country for centuries.
Last option is not correct as dynasty is a reigning family that is ruling certain country or area for a longer period of time.