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

ancient Romans escaped the heat of the eruptions of Pompeii and Herculaneum volcanoes taking trips to their villas in the suburbs of Rome.

efficient and affordable means of transport have provided one of the basic requisites for the rise of modern tourism.

middle class English people have always been passionate about international travel.

the industry of tourism suffered a drastic decline during the Dark Ages.

the Industrial Revolution increased the living standards of the working classes allowing them, for the first time in history, to take trips for pleasure abroad.