What Are two positive effects on europeans?

What part of the Middle Ages were the Viking voyages in? What century would 1848 be? What century is 210? How is the Trojan war important to civilization? Why is it hard to create a timeline of events chronicling eatths history? Who won the eighth crusade? What country was responsible for introducing livestock and cattle ranching in the southwest? How was the Renaissance noble different from the medieval knight? How did citizen indifference and loss of patriotism lead to the fall of the roman empire? What is the background of surname cid? What was live really like in the Medieval Times? Are meaning of jihad and crusade the same today as they were prior in the 11th century? How was the clock originally invented? What is eroishion? What is the role of the cliterus? Which series of events is arranged in the correct chronological order? What key beliefs and values emerged and how did modern age influence societies? Where did most of the fighting take place during the crusades? What century and millennium is the year 2020? What is the definition of Louis Cawkwell?