What was Tokyo's ancient name?
a. Ado
b. Edo
c. Pdo
d. Do

Hint:
It started in the 12th century as a tiny fishing village. This gave it the name along with its location since the name in Japanese means coastal waters or estuary. Given the 1868 Meiji Restoration, the name was changed to Tokyo.

Complete step by step solution:
What?
1) The ancient name of Tokyo was Edo which in Japanese means coastal waters or estuary.
2) When Emperor Meiji changed the capital of Japan from Kyoto to Edo, he renamed it Tokyo. Tokyo started life as a town known as Edo, Tokyo.
3) Tokyo is a city founded on the water under all the concrete and neon. This is the reason why the 37 million people of the Japanese capital are here.
4) Canny water management was a crucial factor in the city's remarkable development from a fishing village to a seat of political influence.
5) The Tokugawa era, also known as the Edo period, (1603-1867, The last era of traditional Japan, under the shogunate (military dictatorship) established by Tokugawa Ieyasu, was a time of internal peace, political stability, and economic development.

When & Where?
1) The city experienced unparalleled cultural and economic growth during this era, known as the Edo period, and the population had boomed to more than 1.1 million by the 1720s, making it one of the world's largest cities.
2) In 1868, when the nearly 700-year shogunate era came to an end, the name of the city was officially changed to Tokyo, which means eastern capital, and the new emperor, Meiji, transferred his residence there.

Note:
1) In Japan, Sarasvati is represented and venerated not only by the Veena, but also by her connexion with water. (One may remember that Saraswati was originally the personification of the river by that name.) Hence, it is often worshipped in water pools in Japan.
2) If you're going to Japanese tombs, you'll find the Sanskrit alphabet. This alphabet can not be read by the Japanese, but it is still used to honour the deceased. It is quite interesting that the 5th-century Siddham script, which had vanished in India, is still in use in Japan.