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.
German Gottlieb Daimler invented the first gas-engined motorcycle in 1885 when he attached an engine to a wooden bike. That marked the moment in history when the dual development of a viable gas-powered engine and the modern bicycle collided.Gottlieb Daimler used a new engine invented by engineer, Nicolaus Otto.Otto invented the first Four-Stroke Internal-Combustion Engine in 1876, dubbing it the Otto Cycle Engine. As soon as he completed his engine, Daimler (a former Otto employee) built it into a motorcycle.merican Sylvester Howard Roper (1823-1896) invented a two-cylinder, steam-powered velocipede in 1867. This can be considered the first motorcycle, if you allow your description of a motorcycle to include a coal-fired steam engine.