Final answer:
In the late 800s, Muslim forces invaded Southern Italy, including Sicily, parts of the Italian mainland, the Mediterranean islands, and continued presence in Iberian Peninsula.
Step-by-step explanation:
Islamic Invasions in the Late 800s
In the late 800s, the focus of Muslim invasions shifted to areas in Europe and Asia. After the Caliphate's early successes in Spain and the wider Iberian Peninsula, Muslim forces were also known to be active in the Southern Italian regions, including Sicily, parts of the Italian mainland, and the Mediterranean islands. Additionally, there were raids and incursions into regions such as Francia and the territories within the Byzantine Empire. A key moment during this period was the establishment of the Emirate of Sicily in 831 when Muslims captured Palermo and later controlled much of Sicily.