Islami City
Islam and Islamic History in Arabia and the Middle East: The Ottomans
This site gives a military, political and religious overview of the Ottoman Empire. Includes links to additional Islam and Islamic history sites.
BBC
Bbc: The Story of Africa: Islam
This BBC series site charts the growth of Islam in Africa until the 1880s.
Lonely Planet
Lonely Planet: Bulgaria
Lonely Planet provides a concise history of Bulgaria, starting in 679 BC and working up to the reign of President Petar Stoyanov. Also includes information on the country's geography, demographics, and culture.