Albany, New York became the capital of New York in 1797 following formation of the United States. Albany is one of the oldest surviving settlements of the original British thirteen colonies, and is the longest continuously chartered city in the United States. During the late 18th century and throughout most of the 19th, Albany was a center of trade and transportation. The city lies toward the north end of the navigable Hudson River, was the original eastern terminus of the Erie Canal connecting to the Great Lakes, and was home to some of the earliest railroad systems in the world. In the 1920s,
Asian carp introduced. The United States Environmental Protection Agency is also concerned about the possibility of Asian carp migrating to the Great Lakes. In 2002, the U.S. Army Corps of Engineers completed an electric fish barrier in the Chicago Sanitary and Ship Canal, the only navigable aquatic link between the Great Lakes and the Mississippi River drainage basins. The initial fish barrier was used as a demonstration project to study the design's effectiveness. Following positive results, construction began on a second, permanent barrier in 2004. In addition to the canal, the corps has identified 19 sites in five additional states, from Minnesota