Analysis of information sources in references of the Wikipedia article "Japan" in Simple English language version.
The Rising Sun Flag and "Kimi Ga Yo" are respectively the national flag and anthem of Japan. This was formalized in 1999 with the Law Regarding the National Flag and National Anthem.
The Edo Period lasted for nearly 260 years until the Meiji Restoration in 1868, when the Tokugawa Shogunate ended and imperial rule was restored. The Emperor moved to Edo, which was renamed Tokyo. Thus, Tokyo became the capital of Japan