Write 2-3 facts about what was happening in the Middle Age please answer

In the history of Europe, the Middle Ages or Medieval Period lasted from the 5th to the late 15th century. ... Population decline, counterurbanisation, the collapse of centralized authority, invasions, and mass migrations of tribes, which had begun in Late Antiquity, continued in the Early Middle Ages.

Explanation:

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.

i believe the answer is: description

description refers to the goal of psychologist to identify the phenomenon that being observed. this goal is being actualized by collecting data/information from various clues that observed through the phenomenon. this goal must be accomplished before pyschologist able to create methods of treatment.