In Chapter 11,of a long walk to water why does the physical setting of the chapter change?

clerical work ensures that an office runs smoothly. it involves the day-to-day administrative tasks of an office, such as answering phones, scheduling appointments, sending faxes, and filing documents. office clerks and secretaries need to have particularly strong clerical skills.

explanation:

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very interesting story but where is the question what is actually a question i don't understand

21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.