What was Tokyo originally called?

Here is the question :

WHAT WAS TOKYO ORIGINALLY CALLED?

Here is the option for the question :

Taisho
Tokugawa
Akita
Edo

The Answer:

And, the answer for the the question is :

Edo

Explanation:

[STC007150] Historically, Tokyo was known as Edo. The city’s name was changed in 1868 when the Tokugawa family’s military dictatorship of Japan ended. At that time, Emperor Meiji moved the imperial home and court from Kyoto to Edo, and renamed it Tokyo, signaling the beginning of the Meiji era. The grounds of the Imperial Palace in Tokyo are still open to the public and may be reached on foot from Tokyo Station in about 10 minutes.