Tradespeople gathered in towns and cities.
At street level, the busy lanes were filled with shops, while upstairs, craftspeople often had their workshops. In some places, craftspeople of the same type all had shops on the same street. One street might be filled with tailors, while another might be all shoemakers. Even the biggest cities were home to no more than 100,000 people, which may sound like a lot, but compare that to New York City. More than 8 million people live there now!