Which of the following best describes the columbian exchange?
the letters columbus and other conquistadors exchanged with the spanish crown
an exchange of plants, animals, and diseases between europe and the americas
a form of trade between the spanish and natives
the way in which explorers exchanged information about new lands to conquer

The correct answer is B. An exchange of plants, animals, and diseases between Europe and the Americas

Explanation:

In history, the Columbian Exchange or Columbian interchange refers to the process of transfer of different elements including animals, plants, diseases, population and technology between South and Central America and Europe with the arrival of Spanish settlers to America and later the transfer between both zones with Africa caused by the use of slaver that were taken from West Africa. This exchange or interchange had important cultural effects on the parties involved but also implied negative consequences such as the introduction of invasive species and the diseases that killed many people but mainly indigenous people that lived in South and Central America. Considering this, the statement that best describes the Columbian exchanged is "an exchange of plants, animals, and diseases between Europe and the Americas".