How did the Great Plains across the Mississippi river become a major wherica?

How did the Great Plains across the Mississippi river become a major wheat-producing area of America?
Answer:

  • In the early years, the fertile soil produced good crops.
  • When the soil used to get exhausted, the migrants would move further west to explore new lands to raise a new crop.
  • When the migrants reached the Great Plains across the Mississippi river, they settled down as this region, in few decades, became a major wheat-producing area of America.