Title: Nuts and bolts of the past
Subjects: 18th century, 19th century, History, Inventions, Technology, United States, Histoire, Découvertes scientifiques, Historia, Tecnología, Technologie, Inventos, Erfindung, Industrialisierung, Technology, history, Inventions, history
Places: United States, États-Unis, EE. UU
Time periods: 18th century, 19th century, 18e siècle, Siglo XVIII, Siglo XIX, 19e siècle