Bonjour, j'aurais besoin d'aide, quelqu'un pourrait-il corriger mon texte en anglais ?

Il faut l'écrire à la voix passive, j'ai eu beaucoup du mal et j'aimerais qu'on me corrige..Merci d'avance !

The triangular trade started in the 16th century. When South America was discovered by Christopher Columbus in 1492, slavery began to develop, the navigator bringing Indians back to Spain.

This trade was so called because it involved three continents. America, Europe and Africa. European countries charter ships to Africa. There, Europeans exchange goods for African slaves captured by other Africans. Captives are taken to the American continent where they are exchanged by Europeans for products which they consider to be of greater value at the time.

The slave trade was developed because of the development of plantations of tropical products. It took a long time to work on the growing plantations. However, the Amerindian workforce was insufficient. Europeans are therefore going to seek the essential manpower in Africa.

The products that Europeans imported were mainly: Iron objects, firearms, lead, rum and other alcohols.​