What’s Wrong with this Colonial Picture?

Timeline

1624  First cattle to America

1712  Whaling industry takes off, steam engine invented

1719  1^st potatoes grown in America (NH)

1752  Franklin experiments with lightning rod

1755  1^st dictionary published

1774  Electric telegraph patented

1775  Steamship invented

1780  Franklin invented bifocal eyeglasses

1783  Hot air balloon invented

1784  Threshing machine invented

1785  Power loom invented

1786  Steamboat invented

1789  Guillotine invented

1790  1^st  cotton mill (Slater’s Mill, RI)

1791  gas turbine invented, bicycle invented (Scotland)

1792  gas lighting invented

1993  Cotton gin invented

1795  Preserving jar invented

1796  Smallpox vaccination created

1797  Carding machine patented

1799  Battery invented

1805  Lewis & Clark

1806  Coffee pot with metal sieve invented

1810  100 cotton mills in existence

1814  Metal-tipped plough created

1826  1^st American railroad

1830  1^st American woolen mill (Lowell, MA)

1831  Reaping machines

1833  Sewing machine

1834  Threshing machine

1840  3,000 miles of railroad in America

1842  Ether anesthesia