There are two ways of measuring "largest", length and number of stations.
Themore normal term is "Métro", since most systems are only partially underground, and emerge onto the surface outside city centres
Top 10 Métro systems by length:LocationCountryLength (km)StationsBeijingChina442284ShanghaiChina437289SeoulSouth Korea406.2326LondonUnited Kingdom402270New York CityUnited States337421BerlinGermany331166MoscowRussia313.1188MadridSpain293300Mexico CityMexico226195ParisFrance218.4302 Top 10 Métro systems by number of stations:LocationCountryStationsLength (km)New York CityUnited States421337SeoulSouth Korea326406.2ParisFrance302218.4MadridSpain300293ShanghaiChina289437BeijingChina284442LondonUnited Kingdom270402Mexico CityMexico195226MoscowRussia188313.1TokyoJapan179195.1
which city has underground railway system streatching 265kmand 170 station
Moscow.
London
London. London's Metropolitan Railway opened to the public on 10th January, 1863.
London, UK in 1863
The underground railway was NOT underground. It was a trail leading the black to safety.
London was the first city to have an underground railroad. The Metropolitan Railway opened in 1863. The first underground railroad in the United States was the West Side and Yonkers Railway, opened in New York City in 1870.
New York City Subway
I am between stations of the Underground Railway.
A metro refers to an electric railway that operates underground in a given city.
London. The Metropolitan railway opened in 1863, and their tunnels still survive as part of the Circle Line on the London Underground.
the rails and engines accourding to Julilly from underground to canada by barbara smucker is the underground railroad or railway.