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John Herschel
John Herschel invents the blueprint. Which is hepful because it is easier to recreate things. -
Period: to
1840-1850
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Samuel Slocum
Samuel Slocum patents the stapler. This is useful because documents can be stapled together. -
William Henry Harrison
President William Henry Harrison was elected on March, 4 1841. -
Alexander Bain
Alexander Bain of Scotland, invents the facsimile. Also known as the fax machine, which is something that sends and exact copy of something. -
Joseph Dart builds
Joseph Dart builds the first grain elevator. This was something that helped to store grains but also made the grains more secure and safe. -
Samuel Morse
Samuel Morse sends first telegraph message from Washington to Baltimore. -
John Mercer
Englishmen, John Mercer invents mercerized cotton. Mercerization is a process applied to cellulosic fibers -
President James K. Polk
James K. Polk was elected on November, 5 1844 -
Elias Howe
American, Elias Howe invents a sewing machine. This was useful for sewing clothes or stitching a tear in clothing. -
Robert William Thomson
Robert William Thomson patents the first vulcanised rubber pneumatic tire. This was something he made so that the wheels hap more traction and not just wood. -
Presedential Veto
Congress overrides a presidential veto. President Tyler's veto of a military appropriation was overturned. -
Monroe Doctrine Enforced
President Polk enforced the Monroe Doctrine which doesn;t let anymore Europeans colonize in the Americas. -
Dr. William Morton
Dr. William Morton, a Massachusetts dentist, is the first to use anesthesia for tooth extraction. -
Mexican American War Starts
A war between the U.S. and Mexico spanned the period from Spring 1846 to Fall 1847, resulting in the defeat of Mexico and the loss of approximately half of its national territory in the north. -
American Medical Association
The American Medical Association is founded in Philadelphia. -
Zachary Taylor
Zachary Taylor was elected president on November, 7 1848 -
Elizabeth Blackwell
The first woman doctor in the United States, Elizabeth Blackwell, is granted her degree by the Medical Institute of Geneva, New York.
