Different shades, tints, and hues of green have different meanings. For example, dark green represents greed, ambition, and wealth, while yellow-green stands for sickness, jealousy, and cowardice, and olive green represents the traditional color of peace.
The Columbian Exchange is a term used to denote the world-changing exchange of agricultural goods, slave labor, diseases, and ideas between the Eastern and Western Hemispheres that occurred after the year 1492 CE.
The worst negative effect of the Columbian exchange was the disease which brought to the people of New World such as smallpox, measles, chicken pox, malaria, influenza, cholera and many others. Syphilis disease also passed to the Europeans.