Answer:
Meiji Restoration.
Explanation:
The Meiji Restoration was the political upheaval that marked the end of the reign of the military nobility in Japan in 1867. It opened the way to a radical modernization and westernization of Japan.
During this period the Tokugawa shogunate was dissolved, so that power in the country returned to the emperor and his government. The land was redistributed into the prefectures still in use today, with a governor at the head of each prefecture. The samurai lost their right to be Japan's only armed forces. The Meijio government had the army modernized according to Western example, so that from then on someone's social background was no longer important to be allowed to serve in the army. In addition, Japan opened up to Western technologies and ideas, after centuries of trying to keep them out as much as possible.
