Edo consequently rapidly grew from what had been a small, virtually unknown fishing village in 1457 to a metropolis with an estimated population of 1,000,000 by 1721, the largest city in the world at the time.
Thus, Edo grew fast from a small, in effect unknown fishing village in 1457, to a metropolis with an estimated of 1,000,000 by 1721, the world's largest city at the time.