Step 1 : Introduction to the question "Which Asian capital was formerly known as Edo?"
...Edo also romanized as Jedo, Yedo or Yeddo, is the former name of Tokyo. It was the seat of power for the Tokugawa shogunate, which ruled Japan from 1603 to 1868. During this ... Edo period Edo Castle Edo (disambiguation)
Step 2 : Answer to the question "Which Asian capital was formerly known as Edo?"
The history of the city of Tokyo stretches back some 400 years. Originally named Edo, the city grew into a huge city with a population of over a million by the mid-eighteenth century. Throughout this time, the Emperor resided in Kyoto, which was the formal capital of the nation. 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.