Orange (colour) it contains arsenic and is highly toxic. It was also used as a fly poison and to poison arrows. Because of its yellow-orange colour, it was also a favourite with alchemists searching for a way to make gold, in both China and the West. Before the late 15th century, the colour orange existed in Europe, but without the name; it was simply called yellow-red. Portuguese merchants brought the first orange trees to Europe from Asia in the late 15th and early 16th century, along with the Sanskrit "naranga", which gradually became part of several European languages: "naranja" in Spanish, "laranja"
El Dorado Lake El Dorado Lake El Dorado Lake is a reservoir on the Walnut River northeast of El Dorado in the Flint Hills region of Kansas. Built and managed by the U.S. Army Corps of Engineers, it is used for flood control, recreation, and water supply. El Dorado State Park is located on its shore. The Flood Control Act of 1965 authorized construction of El Dorado Lake. The U.S. Army Corps of Engineers held groundbreaking ceremonies in September 1973, and construction began the following month. The reservoir became fully operational for flood control June 29, 1981. Construction of El Dorado Lake incorporated