New York became the most populous urbanized area in the world in early 1920s, overtaking London. The metropolitan area surpassed the 10 million mark in early 1930s, becoming the first megacity in human history.
New York became the most populous urbanized area in the world in early 1920s, overtaking London. The metropolitan area surpassed the 10 million mark in early 1930s, becoming the first megacity in human history.