In the 19th century, the city was transformed by development relating to its status as a trading center, as well as by European immigration. The city adopted the Commissioners' Plan of 1811, which expanded the city street grid to encompass all of Manhattan. The 1825 completion of the Erie Canal through central New York connected the Atlantic port to the agricultural markets and commodities of the North American interior via the Hudson River and the Great Lakes. Local politics became dominated by Tammany Hall, a political machine supported by Irish and German immigrants. COUNT 5
QSN1 What plan of 1811 spread a grid of streets across Manhattan? ANS1 Commissioners' Plan QSN2 In what year did the Erie Canal finish building? ANS2 1825 QSN3 What political machine controlled New York politics in this era? ANS3 Tammany Hall QSN4 Along with German immigrants, immigrants of what nationality supported Tammany Hall? ANS4 Irish QSN5 The Erie Canal was finished being built in what year? ANS5 1825