What are the Middle Ages?. The Middle Ages are the period in Europe between 500 and 1500 AD, after the decline of the Roman Empire. During this period Europe remained fragmented.. What trends emerged as a result of repeated Germanic invasions? . Because of the Germanic invasions trade was disruptedmoney became scarcecities were abandoned and declinedthe population shifted as people moved out of cities to the country (most of Europe was rural)..