How did Enclosure lead to people moving into the cities?

When land owners in England enclosed their lands by erecting fenses and walls, they established greater control over who could use those lands. As a result, many people who had been infomrally using or living there were forced off. Being forced out of their homes and off the lands they had cultivated, they had to go somewhere and since other lands were not available (the other land owners were doing the same thing) the only place they could go was to the cities.