Orhan and Murad settled numerous turks and muslims in Edirne in the Maritza Valley. This is when we start hearing of the term 'timars' and 'timariots'. (see appendix)

The timar system guaranteed a source for Turkish cavalry for the sultan's army. This colonization resulted around Southeastern Europe, which would eventually be known as Rumelia. Rumelia would become a second heartland and central to the Ottoman state. In some ways, it became more important than Anatolia.

The mineral and timber resources from this new land gave later Ottomans sultans the means to conquer the rest of Anatolia.