How did the crusades affect the European economy?
The Crusades had, both, positive and negative outcomes on the economy. The Crusades aided in ending feudalism and bringing out the Renaissance. The Crusades pulling in the Knights to fight the wars left Monarchs in power and bringing in new, foreign, items made the merchants grow rich from the new trades.
How did the Crusades affect the economy and government of Europe and relations among religious groups?
Well during the crusades many feudal lords lost Thieu money soldiers and recourse's their fore this weakened their power. Crusades also caused new conflicts between Christan's Jews and Muslim's. Jews ended many Jewish peoples lives on their way to Palestine. Once their they did the same 2 Muslims fear of hatred Christians continued many years After the crusades ended.
Crusades caused by the Christians have actually increased Europe's economical activity. The reason is because the Pope has ordered all Christian men to join the army, and told them to raise money for the great Crusades. So, the economic status of the cities grew, and thus, resulted in economic boom. (In destroyed towns and cities however, economic trend dropped, due to obvious reasons like being destroyed)
Crusades had an affect in Europe by not going on, so called "quest's" and they are like knights and vassal's asking Church officials or Kings in exchange for land, food, and protection to live and survive unfairly. Alexis Nieves P.S. - I think this is what Crusades have an affect on Europe in the Middle Ages. Because i watched about six videos on YOUTUBE to get this answer, so maybe go on youtube or google…