harvester
A mechanical mower-reaper
American Farmer
A Reaper is the harvester that McCormick designed.
Anderson and McCormick
Automation.
Horse-drawn Reaper
Increased selling products to markets, and traders.
Facebook is American invention.
all of Smith's ideas contributed in the American economy which lead to the increase of the productivity and output, it also increased the competitions in the market.
The Heroic Age of American Invention was created in 1961.
The Heroic Age of American Invention has 290 pages.
the productivity of american