Hypothyroidism has several causes. The first of which is a deficiency of iodine. Iodine is found in shellfish, shrimp, salt, and other foods. If a person does not get enough of these foods, they will not receive the proper amount of iodine that the thyroid needs to function at its best.
Introduction. Japanese samurai were warriors of the shogun rulers during feudal times. While their origins are unknown, what is known is that they were fearsome in combat and were fast on horseback. In the 8th century, Japan's government sent warriors to subdue barbarians in northern Honshu.amurai were expected to be fearless, loyal servants of the samurai lords, the daimyo, while leading a plain and simple life. These warriors made up a very small portion of the Japanese population, while the rest of the population were farmers, merchants, priests, monks and artisans.
Society was divided into two classes in Feudal Japan, the nobility and the peasants. The noble class made up roughly twelve percent of the population with peasants making up the rest. Emperor and Shogun. The Emperor and the Shogun were the highest ranking nobles. During Japan's feudal period the Shogun held the most power while the Emperor was more of a puppet figure with little actual power. As the Shogun was a military leader his sword, or Nihonto in Japanese (katana came later in the Mid-Muromachi period), was an important part of his attire.