Question: What do these peoples of many nations and tribal affiliations, whom global maritime and naval historian Barry M. Gough had good relations with, believe as a resource and spiritual symbol?
Context: The Office of Naval Intelligence (ONI) is the military intelligence agency of the United States Navy.  Established in 1882 primarily to advance the Navy's modernization efforts, ONI is the oldest member of the United States Intelligence Community and serves as the nation's premier source of maritime intelligence.  Since the First World War, its mission has broadened to include real-time reporting on the developments and activities of foreign navies; protecting maritime resources and interests; monitoring and countering transnational maritime threats; providing technical, operational, and tactical support to the U.S. Navy and its partners; and surveying the global maritime environment.  ONI employs over 3,000 military and civilian personnel worldwide and is headquartered at the National Maritime Intelligence Center in Suitland, Maryland. The Office of Global Maritime Situational Awareness (OGMSA) is a United States interagency office with a global reach tasked with enhancing global maritime domain awareness.  OGMSA acts as a catalyst for and among all entities in the public and private sectors with maritime interests to develop an information sharing environment.  Within this environment, partners can embrace and achieve the common objective of obtaining and sharing information as a mechanism to increase safety, security and economic prosperity in the maritime domain and have the supporting architecture to do so. Global Maritime is an independent offshore and engineering consultancy headquartered in Stavanger, Norway.  The company provides engineering, marine and advisory services to the offshore and shipping industry.  Originally operating primarily in the North Sea and the Gulf of Mexico, the company has over the recent years expanded its area of operations to include a number of emerging market locations.  Global Maritime offers expertise from concept design, construction and operation, through to decommissioning of offshore developments. The Global Maritime Forum is an international not-for-profit organisation dedicated to promoting the potential of the global maritime industry.  To serve its mission, it convenes leaders from across the maritime community with policy-makers, experts, NGOs and other influential decision-makers and opinion shapers to discuss collective challenges and to work together on developing new solutions and recommendations for action. Sir Julian Stafford Corbett (12 November 1854 at Walcot House, Kennington Road, Lambeth – 21 September 1922 at Manor Farm, Stopham, Pulborough, Sussex) was a prominent British naval historian and geostrategist of the late 19th and early 20th centuries, whose works helped shape the Royal Navy's reforms of that era.  One of his most famous works is "Some Principles of Maritime Strategy", which remains a classic among students of naval warfare.  Corbett was a good friend and ally of naval reformer Admiral John "Jacky" Fisher, the First Sea Lord.  He was chosen to write the official history of British Naval operations during World War I. The Good Relations Group is a London, UK-based group of public relations and communications companies, owned by Chime Communications plc.  The group has 215 staff, 172 based in the UK.  As well as Good Relations, the group also includes agencies Harvard, MMK and Ptarmigan; some regional offices of Bell Pottinger Group were also rebranded as Good Relations following Bell Pottinger's MBO in June 2012. Ulane Bonnel (born Ulane Zeeck in Lingleville, Texas on 22 September 1918 - died in Paris, France on 26 September 2006) was a U.S. naval historian working in France, who played a major role developing professional connections between American and French naval historians and in founding both the scholarly journal "Chronique d'histoire maritime" and the French Commission of Maritime History ("Commission française d'histoire maritime"). Harold David Langley (born 15 February 1925, in Amsterdam, New York) is an American diplomatic and naval historian who served as associate curator of naval history at the Smithsonian Institution from 1969.  As a naval historian, he was a pioneer in exploring American naval social and medical history. Barry Morton Gough (born 17 September 1938, Victoria, B.C.) is a global maritime and naval historian based on Canada's Pacific coast.  Gough has made in the British Columbia and western North American context a number of monographic contributions to ethnohistory, cross-cultural relations, patterns of missionary acceptance among Northwest Coast peoples, frontier–borderland studies and environmental history.  Within the perspective of seapower worldwide, he has worked to explore the maritime dimensions of British Columbia history and to recast and reaffirm the imperial foundations of Canadian history. The indigenous peoples of the Pacific Northwest Coast are composed of many nations and tribal affiliations, each with distinctive cultural and political identities, but they share certain beliefs, traditions and practices, such as the centrality of salmon as a resource and spiritual symbol.  The term "Northwest Coast" or "North West Coast" is used in anthropology to refer to the groups of Indigenous people residing along the coast of British Columbia, Washington state, parts of Alaska, Oregon, and northern California.  The term "Pacific Northwest" is largely used in the American context.
Answer: centrality of salmon