 
<translate> Ndepụta nke usoro metro gụnyere usoro ụgbọ okporo ígwè eletrik na-agba ọsọ ọsọ n'ụwa nile. N'ọnọdụ ụfọdụ, a na-akpọ usoro metro dị ka ụzọ ụgbọ oloko, U-Bahns ma ọ bụ n'okpuru ala. N'ọnwa Ọktoba afọ 2014, obodo 157 dị na mba 55 n'ụwa niile nwere ihe dị ka ụzọ ụgbọ oloko 160 e depụtara ebe a. London Underground bu ụzọ meghee dị ka "ụgbọ okporo ígwè dị n'okpuru ala" na 1863 na ụzọ ụgbọ oloko mbụ ya nke nwere ọkụ eletrik meghere na 1890, na-eme ka ọ bụrụ usoro ụzọ ụgbọ oloko mbụ n'ụwa. Usoro ụgbọ okporo ígwè nwere ogologo ụzọ kasị dị anya bụ Shanghai Metro; nke kasị ekwo ekwo bụ Beijing Subway; nke nwekwara ọtụtụ ọdụ bụ New York City Subway.  Zaa ajụjụ a: olee mgbe ụgbọ okporo ígwè metro mbụ bidoro n'ụwa? Ka anyị buru ụzọ mee ka uche anyị dịrị n'ihe anyị na-eme: <eng> This list of metro systems includes electrified rapid transit train systems worldwide. In some cases, metro systems are referred to as subways, U-Bahns or undergrounds. As of October 2014, 157 cities in 55 countries around the world host the approximately 160 metro systems that are listed here. The London Underground first opened as an "underground railway" in 1863 and its first electrified underground line opened in 1890, making it the world's first metro system. The metro system with the longest route length is the Shanghai Metro; the busiest one is the Beijing Subway; and the one with the most stations is the New York City Subway.

Answer this question: when was first metro train started in world? Let's give stream of consciousness first: 