Name this sectibes undergro

1.	Name this sectibes undergro
Answer» Answer: The London Underground is a metro SYSTEM in the UNITED Kingdom that serves Greater London and the home counties of Buckinghamshire, ESSEX and Hertfordshire. Its first section opened in 1863,[1] making it the OLDEST underground metro system in the world – although in fact approximately 55% of the current network is above ground,[2] as it generally runs on the surface in outlying suburbs. Step-by-step explanation: Follow me and mark as Brainlist ♥️✔️☺️

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Answer:

The London Underground is a metro SYSTEM in the UNITED Kingdom that serves Greater London and the home counties of Buckinghamshire, ESSEX and Hertfordshire. Its first section opened in 1863,[1] making it the OLDEST underground metro system in the world – although in fact approximately 55% of the current network is above ground,[2] as it generally runs on the surface in outlying suburbs.

Step-by-step explanation: