Whoever wrote this article seems to think a strong dollar is fundamental to a strong economy. But, notice where it is on this timeline the only prolonged strengthening of the dollar that shows up. Yep, you've got it, the depth of the great depression. And, notice where the WWII and postwar weakening of the dollar led -- that's right, to in many ways the most prosperous economy the world has ever seen.
Because we try to figure out how things like "strengthening" and "weakening" of the dollar fit in, and we actually have policies much more intelligent than, weaking of the dollar! Collapse is imminent!
And a strong currency usually means weak manufacturing. And I don't know how a country can be strong without a solid manufacturing sector. Like, when we a war breaks out, we ask our enemies to sell us components and medical key ingredients?