1803 - ANSWER...-Ft. Dearborn built at future site of Chicago
1833 - ANSWER...-Potawatomis sell Chicago
1852 - ANSWER...-National Road links Cumberland, MD to Vandalia, IL
1848 - ANSWER...-telegraph connects Chicago & East
1852 - ANSWER...-Chicago & New York linked by rail
1865 - ANSWER...-Union stockyard founded
1868 - ANSWER...-refrigerated railcar invented
1869 - ANSWER...-first transcontinental railroad line, design of Riverside, IL
1871 - ANSWER...-Great Chicago Fire
1886 - ANSWER...-American Federation of Labor founded, first citywide electric in
Montgomery, Alabama
1825-70 - ANSWER...-Hudson River School dominates art in U.S.
1830s - ANSWER...-balloon frame construction invented
1854 - ANSWER...-Thoreau publishes "Walden"
1856 - ANSWER...-Planning of Llewellyn Park, New Jersey
1857-74 - ANSWER...-construction of NY's central park
1876 - ANSWER...-Centennial Exposition in Philadelphia
1883 - ANSWER...-Brooklyn Bridge opens
1884 - ANSWER...-first skyscraper constructed in Chicago
1893 - ANSWER...-Columbia World Exposition
1909 - ANSWER...-Plan of Chicago