Greenland under U.S. protection

The video discusses the strategic importance of the Atlantic War Zone, highlighting how the raising of the American flag brings U.S. aid closer to Great Britain. It also covers the development of airfields and naval stations along the coast of the new Protectorate, emphasizing the northernmost links.

What developments are expected along the coast of the new Protectorate?

What does the text refer to as the northernmost links?