"Cadbury world" is a chocolate theme park inaugurated in 1991. IT    (I)   half a million visitors every year and combines an exhibition with a brief factory tour. The exhibition opens with Mayan and Aztec use of cocoa and the "discovery" by the Europeans of the "New World" together with the spicy drink known as chocolate. The exhibition tells the arrival of cocoa in England as a luxury drink, the establishment of John Cadbury's shop in Bull Street, Birmingham, in the 1830s, selling tea, coffee and chocolate, the discovery by his sons of a new process    (II)   cocoa and the establishment of a flourishing cocoa and chocolate business in the 1870s. Cocoa became a popular family drink, marketed by Cadbury as "absolutely pure, therefore best."

Preencha corretamente a lacuna (II) do texto: