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The United States expropriated from Panama additional areas around the soon-to-be-built Madden Dam and annexed them to the Panama Canal Zone. [365] [373] Caribbean Sea: May 3, 1932 The United States adjusted the border at Punta Paitilla in the Canal Zone, returning a small amount of land to Panama. This was the site for a planned new American ...
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In Britain between 1760 and 1820 over one hundred canals were built. In the United States, navigable canals reached into isolated areas and brought them in touch with the world beyond. By 1825 the Erie Canal, 363 miles (584 km) long with 82 locks, opened up a connection from the populated northeast to the fertile Great Plains.
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Infrastructure completed in 1820 (1 C) Infrastructure completed in 1821 (2 C, 1 P) ... Infrastructure completed in 1829 (1 C, 1 P) D. Dams completed in the 1820s (2 C) T.
The Adams–Onís Treaty, signed in 1819 and ratified by Spain in 1821, ceded Florida to the United States, and established a boundary between New Spain and the United States. Slavery was widespread throughout the southern United States. According to the 1820 U.S. Census, the slave population at that time was 1,538,000. [14]
The United States government had funded and constructed improvements along its coastline beginning with the founding of the United States Army Corps of Engineers during the revolution, and many politicians wanted them to contribute to construction of works "of a civil nature" as well. Before 1800, the Corps supervised the construction of ...
The United States has the largest rail transport network of any country in the world, about 160,000 miles (260,000 km). Passenger service is a mass transit option for Americans with commuter rail in most major American cities, especially on the East Coast .