1, ancient Japan. About 1 century BC, there were more than 100 small countries in Japan. Later, these small countries gradually unified.

2. Ancient times. It is divided into five sub-eras: Wensheng, Yayoi, Gufen, Nara and Pingan.

3. The Middle Ages. It can be divided into Kamakura era and Muromachi era.

4. Modern. In the eighth year of Evergreen, the Tokugawa shogunate was established and the Warring States period ended. In the eighth year of Qing Chang, Tokugawa Ieyasu was appointed as a foreign general and established the shogunate regime in Edo (now Tokyo). After that, the Tokugawa family ruled the country for more than 260 years. This period is called the edo period.

5. Modern. Meiji era and Taisho Showa era.

Extended data:

In the 4th century A.D., a unified regime, Yamato State, appeared in Japan for the first time. Later, after the Dahua reform, the emperor system was established, the culture of the Tang Dynasty was introduced, and the political system of the Tang Dynasty in China was imitated in an attempt to create a country ruled by law.

In 7 10, Emperor Yuan and Ming moved the capital to Pingchengjing, Japan entered Nara era, and the country ruled by law became more and more mature. At this time, the territory of the Yamato regime gradually expanded, conquering parts of Northeast China and South Kyushu.

References:

Japanese History-Baidu Encyclopedia