Answer:
They maintained good farmland by managing the rivers.
Explanation:
because I just took the test hope this helps
Quality inputs (improved seeds and fertilizers) are essential to raising productivity (yields per unit area planted) under both the rainfed and irrigated conditions. In addition, strong extension and advisory services are important for enhancing the adoption and efficiency of improved inputs.
- <u><em>A) economic uncertainty </em></u>
- <u><em>B) ethnic persecution </em></u>
- <u><em>F) increased industrializing </em></u>
- <u><em>G) migration</em></u>
<em>Hope this helps!!</em>
