Answer:Between 800 and 1000, three groups—the Magyars, the Vikings, and Muslims—invaded Europe. The Magyars, fierce warriors from the east, crossed over land and attacked Europe from Asia. Perhaps the most frightening invaders of all, the Vikings, came from Scandinavia in the north.
Explanation:
In 330 AD, Constantine, then the emperor of the Roman Empire, moved the seat of power to Constantinople. Then, Constantine founded a "second Rome" (the Byzantine Empire). The city was strategically placed on the trade routes between Europe and Asia, and the Mediterranean Sea and the Black Sea, making it ideal for trade and travel.
I would say the internet since overtime, the internet is becoming used more than books and physically notes.
