Written sources say some settlers took land freely, others bought lands from earlier settlers, some were gifted land by earlier settlers, and that some settlers took lands from others through the use of force or threat of force. Lands were likely not rented during the Age of settlement. Medievalist Hans Kuhn argued that lands were given away or taken freely because earlier settlers had no need for such extensive lands. Historian Gunnar Karlsson notes that it could be rational for earlier settlers to encourage new settlers to settle lands nearby so as to ease maintenance of cattle and slaves, and as insurance in times of crisis.