Before the Battle of Culloden, land in Scotland was owned under a feudal system where ordinary people owed military service to landowners and upland areas were more densely populated than today. After Culloden the feudal system in the Highlands broke down; landowners had less need for people on their land and looked for new ways to make money, for example from intensive sheep rearing. Further change occurred with the purchase of Balmoral by Prince Albert in 1862 which started a trend for rich people to buy land to enjoy field sports as leisure pursuits. Such areas of land became known as estates. There is no strict definition of what constitutes an estate today, but estates are generally more than just farmland and contain forest, mountain or moorland and are managed for a variety of objectives.