It is the Line of longitude
Answer:
Domesticating plants marked a major turning point for humans. The beginning of an agricultural way of life and more permanent civilizations. Humans no longer had to wander to hunt animals and gather plants for their food supplies. Agriculture, the cultivating of domestic plants allowed fewer people to provide more food.
Of the seven (7) continents, South America is the fourth (4th) largest.
Asia, Africa, and North America, in that order, are larger.
Antarctica, Europe, and Australia, in that order, are smaller.