The data given in the table illustrates the underground 
railway
 system of six different Use synonyms
cities
 in different countries. 
Use synonyms
Overall
, only one city opened the underground system very early and had the longest Linking Words
railway
 Use synonyms
route
. Use synonyms
However
, other Linking Words
cities
 opened it very later and the number of passengers is bigger than it. Some Use synonyms
cities
 had Use synonyms
also
 a very short Linking Words
route
 for the Use synonyms
railway
. 
Use synonyms
London
 opened the Use synonyms
railway
 Use synonyms
track
 very early in 1863 Use synonyms
while
 two other Linking Words
cities
 opened it after an interval of probably 27 years. The Use synonyms
route
 to Use synonyms
London
 was the longest Use synonyms
route
, Use synonyms
that is
 394 kilometres but people in Tokyo travelled more every year. The length of the Linking Words
track
 of Paris was approximately half of the length of Use synonyms
London
’s Use synonyms
route
 and started after 150 years of Use synonyms
London
.
The Use synonyms
last
 Linking Words
track
 opened in 2001 in the city of America, Los Angeles, which was the second shortest Use synonyms
track
 and about 50 million people travelled every year. Washington DC started its rail line 100 years after Use synonyms
London
, in 1976 and the number of passengers in it is almost 3 times of America’s other city Los Angeles.Use synonyms