Which two agricultural contributions are common to both Northeast Woodland Indians and Southeast Indians? They made barren land fertile through technological innovations. They developed economical systems of farming, such as terracing. O They used a creative method to maintain the fertility of the land. They cultivated the "three sister" crops of corn, beans, and squash.

Which two agricultural contributions are common to both Northeast Woodland Indians and Southeast Indians? They made barren land fertile through technological innovations. They developed economical systems of farming, such as terracing. O They used a creative method to maintain the fertility of the land. They cultivated the "three sister" crops of corn, beans, and squash.