Mehmed I restored the Turkish unity in Anatolia and began to develop the country. He constructed medreses, hospices and many mosques. Amasya Bayezid Pasha Mosque, Merzifon Celebi Mehmed Sultan Medrese, Bursa Green Mosque, Dimetoka Celebi Mehmed Sultan Mosque, Old Mosque in Edirne and Edirne Yildirim (Thunderbolt) Mosque are some of them.