Tick (1) the right option for each of the following: 1. Which country has the biggest underground railway network?

Tick (1) the right option for each of the following: 1. Which countr

1.	Tick (1) the right option for each of the following: 1. Which country has the biggest underground railway network?
Answer» Explanation:China has the biggest underground railway NETWORK like metro systems.Beijing Subway, China The subway system has been in operation SINCE 1969 and is owned by the CITY of Beijing.