On the Atlas of Canada website, locate the earliest map showing telephone infrastructure in Western Canada and identify its publication year and the provinces/territories it covers. Then, find the most recent 'Marine Transportation Infrastructure – Ports' map to determine its publication year and the approximate number of major ports it displays.
Navigate to the 'Communications and transportation' theme page. Go to the 'Communication' subsection. Identify the earliest map related to telephones in Western Canada, specifically 'Telephones Ontario, Quebec, Manitoba, Saskatchewan, Alberta, British Columbia and Yukon, 1906'. Extract its publication date and the specific provinces/territories it covers. Go to the 'Marine transportation' subsection. Identify the latest edition of the 'Marine Transportation Infrastructure – Ports' map, which is 'Marine Transportation Infrastructure – Ports (2006)'. Extract its publication date and the approximate number of major ports shown. Synthesize the collected information for both maps.
State that the earliest Western Canada telephone map is 'Telephones Ontario, Quebec, Manitoba, Saskatchewan, Alberta, British Columbia and Yukon, 1906'. State that its publication date is 1906. State that it covers Ontario, Quebec, Manitoba, Saskatchewan, Alberta, British Columbia, and Yukon. State that the latest ports map is 'Marine Transportation Infrastructure – Ports (2006)'. State that its publication date is 2010. State that it shows approximately 590 major ports.