50
(A)Travel was considered an essential part of education, which led to the emergence of travel writing.
(B)Andit is this which is the central characteristic of mass tourism in modem societies.
(C)Therehave always been periods in which much of the mass of the population have engaged in play or recreation.
(D)Thisis not to suggest that there was no organized travel in premodern societies, but it was very much the preserve of the elite.