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"
Raleigh's El Dorado Expedition Guyana after 1796 when the Essequibo (part of the Dutch Guyana) was taken by the English, who had initiated the massive introduction of settlers and slaves for their plantations. By the early 19th century, as more explorers came to the region, Lake Parime's existence was definitively disproved and there was a theory that the seasonal flooding of the Rupununi savannah may have been misidentified as such. Raleigh's El Dorado Expedition Raleigh's El Dorado expedition, also known as Raleigh's first voyage to Guiana, was an English military and exploratory expedition led by Sir Walter Raleigh that took place during the Anglo–Spanish