Сезон 1, серия 4: The everyday objects that built America. How stuff as simple as a shovel, a birdcage, a drill bit, a railroad spike, and a video camera linked a nation from coast to coast and accomplished massive feats of engineering like the Hoover Dam, the Erie Canal and the skyscraper.
History · 11 июл. 2014 г. · 40 мин.