Answer:
(a) Magyars
The Magyars emerged from Steppes of Eastern Europe, and around the 9th century, began to move west. They raided the Balkans, and Central Europe, including areas of Germany and Austria.
They were pushed back to modern day Hungary by Holy Roman Emperor Otto I, the land which they finally made their homeland.
(b) Vikings
The Vikings were Scandinavians who began to explore and raid many areas of Europe from the 8th century to the 11th century.
Norwegian and Dannish Vikings raided the west, and settled many areas: Eastern England (Danelaw), Northern France(Normandy), and founded the countries of Iceland and Greenland.
Swedish vikings settled eastern Europe, where they founded the city of Kiev, and the Kievan Rus', the ancestor to the modern Russian state.
(c) Muslims
Muslims came from Arabia, and in a century, conquered most of the Middle East, Northern Africa, and the Iberian Peninsula.
They conquered areas that had a long history of civilization: Mesopotamia, Egypt and the Levant. In fact, Baghdad, located very close to ancient Babylon, became the capital of the Muslim Empire.
3. What can you infer about these groups from the fact that they settled in regions raided?
The Muslims invaded areas that were civilized from millenia ago. They did not found as many cities, but grew existing ones like Baghdad, Alexandria and Jerusalem.
The Vikings settled some populated areas like England, but they mostly established new polities in previously unpopulated areas, like Iceland and the Faroe Island.
The Magyars also founded a new state: Hungary, and the vast majority of Hungarian cities and towns were founded from scratch by them.
