Their relation was they thought that they were saviors.
D trade attracted people from many regions to the city states bringing more cultural diffusion
Negative effective like killing most of them but positive because the natives taught them how to hunt and get warm for the upcoming winter but a lot of them fell sick
Cover crop roots hold the soil in place, protecting soil from wind erosion. Cover crops can also protect soil from the impact of heavy rainfall and runoff. Reduced erosion protects and improves water quality by keeping ag chemicals in the ground and out of drainage water.
