As a good leader, it is important to think about the ever-growing population in your settlement. The Burgage Plots you have now will soon be filled. While you can provide food and clothing, providing shelter to new people is something that requires your undivided attention. So it becomes necessary for you to expand your borders by claiming regions in Manor Lords.

You can certainly go ahead and wage wars to take over your rival Lord’s territory. But before you do that, I recommend focusing on the unclaimed regions on the map. To help you with that, here is a guide on how to claim regions in Manor Lords.

To claim a region, you will need Influence or King's Favor. It should be noted, however, that King's Favor is a feature that was not implemented in the Early Access phase. Luckily, you can use Influence to get the job done. In case you don't know, Influence is a type of currency that you can earn by doing certain things for your people. For example, you can build Burgage Plots and Churches, Enact Tithes, Destroy Bandit Camps, etc. to gain more Influence.

Once you have collected Influence, zoom out to the region view and click on an area that is not managed by you. Then click the "Claim by Influence" button at the bottom.