Accountancy firms circumnavigated this obstacle by forging alliances with law firms rather than merging with them.

ECONOMIST: Accountancy and law

No-one had ever circumnavigated the earth under their own steam - no motors, no sails.

BBC: Jason Lewis: Circumnavigating the world

In 1596, Sir Francis Drake, seaman and adventurer who circumnavigated the world, died.

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Beale based his ambitious quest on a quote by Greek Historian Herodotus, who claimed the Phoenicians circumnavigated Africa in 600BC.

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Jones and Piccard both said they felt they were guided by an "almost invisible hand" as they circumnavigated the globe.

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The first sailor to complete the challenge was Sir Chay Blyth, who circumnavigated the globe non-stop from east to west in 1971.

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In 2006 he successfully circumnavigated Scotland by boat and bike.

BBC: Alan Rankin on his yacht Trade Winds

In around 20 years, the Portuguese will be celebrating a similar quincentenary: that of the expedition led by Ferdinand Magellan which in 1519-22 circumnavigated the globe for the first time.

ECONOMIST: Can Portugal catch up with the rest of Europe?

Flt Lt Capps was an experienced mountaineer, having taken part in a expedition in the Indian Himalayas and led a group on an expedition that circumnavigated Mount Kenya and got to the summit of Point Lenana.

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