The correct answer is London.Rapid urban growth is a recent phenomenon.Until recent times, few settlements reached the population size of more than a few thousand inhabitants.The first urban settlement to reach a population of one million was the city of London by around. A.D. 1810 By 1982 approximately 175 cities in the world had crossed the one million population mark. Hence, Option 1 is correct.Presently 48 percent of the worlds population lives in urban settlements compared to only 3 percent in the year 1800.Additional InformationLondonIt is situated on the bank of the River Thames.It is the capital and the largest city in the United Kingdom.Trent and Wye are rivers situated in the UK.ParisIt is the capital of France and is located on the Seine river.Paris is famous for art, fashion and culture.The Seine is an important waterway in the Paris Basin in the north of France. Seine is about 777 KM in length.Gangola flows in northeastern parts of Nigeria the River and its tributaries are seasonal in nature.Dong nai River flows through 11 provinces of Vietnam and it originated from the Central highlands in South Vietnam.New YorkNew York is a state in the Northeastern United States.New York City is renowned for the concentration of high-rise buildings, commonly known as "the skyscrapers".Washington D.C.It is also known as the "?City of Magnificent Buildings" because of the large and beautiful buildings it is called so.