Which process by both a historian and archeologist in their work

Both use hard evidence to sustain their work.

Explanation:

Hard evidence is, in a nutshell, a physical item. This type of evidence is used to give to these professionals the first glimpse of society, and is trustable because can be seen and touched, but doesn't offer a full comprehension about the past. After a deep analysis of the artifacts, these professionals use another resource, such as literature, oral history, and iconography (images) to fulfill the lack of information.

the captain of a steam ship naturally chooses the shortest route to his destination. since a sailing ship is usually pushed by winds and currents, its captain must find a route where the wind will probably blow in the right direction. tacking, i.e. using contrary wind to pull (sic) the sails, was always possible but wasted time because of the zigzagging required, and this would significantly delay long voyages. the early european explorers were not only looking for new lands. they also had to discover the pattern of winds and currents that would carry them where they wanted to go. during the age of sail winds and currents determined trade routes and therefore influenced european imperialism and modern political geography. for an outline to the main wind systems see global wind patterns.

pilotage or cabotage, in one sense, is the art of sailing along the coast using known landmarks. navigation, in one sense, is the art of sailing long distances out of sight of land.[1] although the polynesians were able to sail the pacific (with great difficulty) and people regularly sailed north and south across the mediterranean, before the time of columbus nearly all sailing was coastal pilotage

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they have different colored collars