1. What are the major elements of early mosque buildings (for example Kufa) and where did they come from? 2. In the further discussion pay attention to the function and significance, the appearance and the development of such elements of mosque architecture as qibla wall, mihrab, minaret, minbar (mimbar), maqsura, entrance portal, and internal (courtyard) façade. 3. Finally, explain the origin (sources) of the architectural forms of Ottoman congregational mosques.