Note: on this article, Cordilleran ice sheet is not capitalized. On other articles, it is capitalized as Cordilleran Ice Sheet. This site uses the full capitalization.
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The Cordilleran ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~2.6 million years.
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SeaTac — Thumbnail History (historylink.org)The City of SeaTac was incorporated in 1989 and named after the Seattle-Tacoma International Airport, which it surrounds. Native Americans had occupied the region roughly midway between present-day Seattle and Tacoma for millennia before the arrival of the first Euro-American settlers in the mid-1850s. The area is centered on the Highline ridge separating Puget Sound and the valley of the Duwamish and Green rivers…