The map shows the spread of Islam. A map titled The Spread of Islam (900 to 1700 C E). Overland routes cross through Asia, Europe, the Arabian Peninsula, North Africa and the Iberian Peninsula. Sea routes travel from Asia to Southeast Asia, along the coast of India, Europe, the Arabian Peninsula, the east coast of Africa, and the coasts of the Mediterranean and Black Seas. In 900 C E Islamic territories included the north coast of Africa, Spain, the Iberian Peninsula and Europe. By 1700 C E Islamic territories had expanded to Southeast Asia, China, further into Asia, Europe, and Africa. What relationship existed between trade routes and the spread of Islam between 900 CE and 1700 CE? Most sea routes did not connect with Islamic territories by 1700 CE. Most trade routes existed within or around Islamic territories by 1700 CE. While overland routes helped spread Islam between 900 CE and 1700 CE, sea routes did not. While sea routes helped spread Islam between 900 CE and 1700 CE, overland routes did not.