The increase in life expectancy during the 20th century is largely due to improvements in child survival; this increase is associated with reductions in infectious disease mortality, due largely to immunization.1 However, infectious diseases remain a major cause of illness, disability, and death.
The First Mowers. The lawn mower was invented in 1830 by Edwin Beard Budding, an engineer from Stroud, Gloucestershire, England. He obtained the idea after seeing a machine in a local cloth mill which used a cutting cylinder (or bladed reel) mounted on a bench to trim cloth to make a smooth finish after weaving.
John Deere created the steel plow. He thought this would be better able to handle the soil. In early 1838, Deere made his first steel plow and sold it to a local farmer. John Deere created the first steel plow in 1837. He designed the first cast steel plow that greatly assisted farmers. John Deere revolutionized American agriculture by developing and marketing the world's first cast steel plow. John Deere began his career as a blacksmith in 1825 and designed many farm plows.