They left rich soil when flood waters receded. So the correct option for the given question is option "d". It has been seen that rivers carry with them very rich and fertile soil which the farmers prefer because the amount of crop and the quality of crop is much better than they can get in any other place. The civilization of ancient Egypt as well as the Indus valley civilization were totally dependent on the Tigris and the Indus river respectively, as far as irrigation was concerned. Seasonal flooding always brings with it new fertile soil for irrigation.
Here you don't actually need to fully solve it to know the answer, because it is multiple choice. Just ignore the fractions and subtract the whole numbers: 8 - 13 = -21. So, the answer will be -21 and then a fraction. Looking at the answer choices, A matches this. So, A is the answer
D. Spices and Silk
That is most likely the correct answer
"It replenished the nutrients in the soil, making the valley very fertile" is the one among the following choices given in the question that is significant about the <span>yearly flooding of the Nile Valley. The correct option among all the options that are given in the question is the third option. I hope it helps you.</span>
