What is the impact of crusades?

What happened in eastern europe? What is define history? What is the origin of the name wiffin? Who coined the term the victor writes the history? What century is 1475? What are all of the European nation-states? What things were invented between 1450 to 1750? What are the roles of cottars in a medieval village? Where did the saying forty winks come from? What was not related to the fall of rome? Where was the tuxedo originated from? What is the advantage of westernization? Which century was 1275? What cultures contributed to the Greco-Roman civilization? What roadblocks did Albert Einstein have to overcome? Who and where the Integrated circuit invented? Who inventad pants? When was Raymond Weil created? Was there oil in the medieval time? How long was the stagecoach trip from Washington to wheeling?