generate questions: In 1822, the citizens of Boston voted to change the official name from "the Town of Boston" to "the City of Boston", and on March 4, 1822, the people of Boston accepted the charter incorporating the City. At the time Boston was chartered as a city, the population was about 46,226, while the area of the city was only 4.7 square miles (12 km2).
What was the City of Boston's name before it was the City of Boston? {sep_token} What year was the name changes to the City of Boston? {sep_token} Boston was chartered as what in 1822? {sep_token} What was the population of Boston in 1822? {sep_token} How many square miles was the city in 1822? {sep_token}