when and why plantaions developed?

Answer 1

A plantation is usually a large farm or estate, especially in a tropical or semitropical country, on which cotton, tobacco, coffee, sugar cane, or trees and the like is cultivated, usually by resident laborers.

A plantation is an intentional planting of a crop, on a larger scale, usually for uses other than cereal production or pasture. The term is currently most often used for plantings of trees and shrubs. The term tends also to be used for plantings maintained on economic bases other than that of subsistence farming.

Crops may be called plantation crops because of their association with a specific type of farming economy. Most of these involve a large landowner, raising crops with economic value rather than for subsistence, with a number of employees carrying out the work. Often it referred to crops newly introduced to a region. In past times it has been associated with slavery, indentured labour, and other economic models of high inequity. However, arable and dairy farming are both usually (but not always) excluded from such definitions. A comparable economic structure in antiquity was the latifundia that produced commercial quantities of olive oil or wine, for export.

Answer 2

Plantations are just another name for a large farm, and the reason for is pretty obvious