The Inquisition was an extremely harsh court of inquisitors of the church court that were supposed to make sure that the Jews or muslims that converted really had. They sometimes tortured people to find out if they had really converted. Thousands of people were burnt at the stake.
According to our jacked-up laws, you are to be burnt at the stake for no legit reason.
The effect of the crusades on the Christians was drastic. Many of their trade routes and trade agreements got destroyed during combat. The people who fought in the crusades ended up scraping a living as they didn't get paid during the wars which rocked the economy.
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The effect on Muslims was an unknown number of deaths that is definitely large. A lot of their property was also destroyed. The good part was the amount of money they ended up getting.
We have suffered many losses, but look how much money we got!
we can build better mosques and schools!
The effect on the Jews was absolutely terrible. They suffered the most destruction of all and were forced to convert so they would be spared, or so they thought. Even after they converted, the inquisition tortured them to make sure they weren't still practicing their own religion. After the crusades, they were expelled from Europe all together.
Queen Isabella and King Ferdinand were the rulers of Spain in the 1400's. They wanted to unite Spain as a catholic country and succeeded. They used the inquisition to keep everyone in check. They later took the city Granada. After accepting baptism as being Catholic, they expelled all the Jews and Muslims. Interesting tidbit: they fully liberated Spain from Jews in the same year as they funded Christopher Columbus's trip.
King Richard I of England or Richard the Lionheart, was the king of England in 1189 to his death in 1199. He was the main reason the Muslims suffered so much destruction. He was mad about the Muslims taking Jerusalem and wanted revenge. He does seem a bit full of himself doesn't he? He fought his way all the way to the city but suffered so many losses that his army was in no fit state to fight. He was one of the few kings remembered today by his byname, Lionheart.