South America the Darién watershed along the Colombia–Panama border, although some may consider the border instead to be the Panama Canal. Geopolitically and geographically all of Panama – including the segment east of the Panama Canal in the isthmus – is typically included in North America alone and among the countries of Central America. Almost all of mainland South America sits on the South American Plate. South America is home to the world's highest uninterrupted waterfall, Angel Falls in Venezuela; the highest single drop waterfall Kaieteur Falls in Guyana; the largest river (by volume), the Amazon River; the longest mountain range, the
Sioux Falls, South Dakota regional health care center. There are four major hospitals in Sioux Falls: Sanford Health (formerly Sioux Valley), Avera McKennan Hospital, the South Dakota Veterans Affairs Hospital, and the Avera Heart Hospital of South Dakota. Sanford Health and Avera Health are the largest and second largest employers in the city, respectively. Emergency medical services (EMS) are provided by Paramedics Plus and Sioux Falls Fire Rescue. Companies based in Sioux Falls include Raven Industries, retailers Lewis Drug and Sunshine Foods, as well as communications companies SONIFI Solutions and Midcontinent Communications. Because of the relatively long distances between Sioux Falls and larger cities,