Who were the professional soldiers employed by the local lords in the feudal system in japan?

a. shogun

b. janissary

c. samurai

d. daimyo

Samurai

Explanation:

Feudal system in japan was the era of feudalism which took place in japan from the 12th through 19th century. During this period there was domination of land by the local rulers,military warlords and the families which were very powerful during that time. The local  lords in the feudal system used Samurai professional soldiers. Samurai were the warriors of the pre-modern Japan which later made up the ruling military class.

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this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.