The world is known as Solterra, and much of it hasn't been explored yet. From what we know there may be Gryphs everywhere, but for the time being only a small area is known centered around Eastdale Village, which is where most trade in the area centers. In the surrounding areas there are farms, and small family groups.
Gryphs are able to use simple tools as they have very clever paws. Carrying things from place to place is either done in the mouth, or other method. Often the best way to do this is bags over the back to carry small items or tools. To move larger heavier items magic, or groups of Gryphs working together to haul items. Some farmers have tried roping livestock to things to pull them around, and have been having limited success at this point.