Complex sentence: In addition, he founded, and encouraged his viziers to found, a number of Muslim institutions and commercial installations in the main districts of Constantinople, such as the Rum Mehmed Pasha Mosque built by the Grand Vizier Rum Mehmed Pasha.
Split into simpler sentences: In addition, he founded, and encouraged his viziers to found a number of Muslim institutions and commercial installations in the main districts of Constantinople. Such as the Rum Mehmed Pasha Mosque built by the Grand Vizier Rum Mehmed Pasha.