the open field system is a system of farming used by farmer mainly during the middle ages but also after.

by fences

The open field system in farming was replaced by the enclosed field system, which involved consolidating small, scattered strips of land into larger, fenced-off fields that could be managed more efficiently by individual landowners.

İn this system, everyone shared land fairly.

may be because the village field was divided and it was left fellow every 4 years .