It can be deduced from the text IV that...

A

some of the historic events that took place in late 19th century and after World War II became key factors in the development of tourism.

B

the industry of tourism was already fully developed in late 19th century Britain.

C

the history of tourism shows that governments and tourist authorities were very aware of all its economic potential well before World War II.

D

travel has always been synonymous with what we nowadays call tourism.

E

ancient Romans could only afford to visit nearby seaside resorts.