when peanuts were introduced to Africa by Portuguese explorers early in the sixteenth century they were quickly adopted into Africa's agriculture, probably because of being

peanuts having been introduced to Africa by Portuguese explorers early in the sixteenth century and quickly adopted into Africa's agriculture, probably because of being

peanuts were introduced to Africa by Portuguese explorers early in the sixteenth century and were quickly adopted into Africa's agriculture, probably because they were

peanuts, introduced to Africa by Portuguese explorers early in the sixteenth century and quickly adopted into Africa's agriculture, probably because they were

peanuts, introduced to Africa by Portuguese explorers early in the sixteenth century and having been quickly adopted into Africa's agriculture, probably because they were