Answer:
C. Europe, Asia and Africa
Explanation:
The founder of the Ottoman Empire widely known as OSMAN I, around 1323 had a dream that three tree branches were extending from his body and stretched to the empire is a big tree whose roots spread through four rivers including the Tigris, the Euphrates, the Nile, and the Danube.
Given that Tigris and Euphrates are in Asia, Danube is in Europe and Nile is in Africa. Hence, the three continents it directed to were ASIA, EUROPE, and AFRICA.
