| 1770 - the approximate start of the Industrial Revolution | 1773 (Dec. 16) The Boston Tea Party | 1775 (Feb. 22) The first joint stock manufacturing company is founded. | 1786 - Printers in Philadelpiha form the first formal strike in the U.S.A. | 1798 - Eli Whitney introduces interchangeable parts of the production of firearms. |
| 1811 - Construction of the National Road; it helps settlers to move west and farm products move east. | 1825 (Oct. 26) - The Erie Canal is opened, launching the eera of canal building. | 1828 (July 14) - Ground-breaking for the Baltimore/Ohio Railroad. This launches the "age of railroads" in U.S.A. | 1848 (Jan. 24) - John Sutter discovers gold in California. | 1849 - The gold rush begins. |
| 1867 - an oil refining business becomes the Standard Oil Company. | 1869 (May 10) - The first ranscontinental railroad is finished, linking the Atlantic and Pacific oceans. | 1870 - 300 000 workers belong to American unions. | 1882 (Jan. 2) - Standard Oil Company is organized with $70 million in capital. | 1886 (Dec. 8) - The American Federation of Labor is organized. |
| 1896 (June 4) - First autmobile finished by Henry Ford. | 1901 - the first American corporation achieves sales of $1 billion. | 1908 - the first Model T is built, priced at $850. | 1913 - Ford sets up the first auto assembly line. | 1924 - The ten millionth Model T is built. |
| 1929 - Black Tuesday, the stock market crashes, starting the Great Depression. | 1932 - 13 million Americans are unemployed. | 1936-37 - Industrial unrest; about 500 000 workers quit their jobs. |
