Step-by-step explanation:
Two, of the most important agricultural contributions, used commonly by north Woodland and southeast indians were:
A) They developed economical systems of farming, such as terracing: the sedentary live styles of these two indigenous groups (North and southeast) allowed them to evolve the methods and activities used for farming, like terracing that helped to avoid the land erosion in difficult weathers or territories.
B) They cultivated the “three sisters” crops of corn, beans, and squash: this new method was one of the most important contributions since all the three ¨sisters¨ helps in a different wat to maintain each other, totally useful when the weather or general conditions were not too friendly.