Answer:
The Crusades were initiated by the Catholic Church in order to gain control of Jerusalem again, as it has fallen into the hands of the Muslims. While the Catholic Church had its goals in conquering Jerusalem, including wealth and power, it didn't foresee that the organizing of the Crusades it's going to actually backfire on it and make the biggest blow to it.
The Crusades themselves had mixed outcomes, sometimes winning, sometimes losing. What had a much greater effect was that the Crusaders managed to bring in Europe a lot of things from Asia which turned out to change the course of history.
Because the Crusaders were in constant contact with the Muslims, they brought in numerous technological advancements in Europe. Also, through them, some of the ancient literature from Greece and Rome came back to Europe.
This prompted a huge interest among the people, especially the ones higher in the hierarchy, as they saw the potential of the new technology, but also the potential for the future based on the ancient literature. The end result was a technological boom in Europe, a loss of power by the Catholic Church, the Age of Discoveries, or all put in one, the Renaissance.
Explanation:
Enlightenment thinkers believed that all citizens are born with natural rights
The Sumerians which was an ancient civilization from Mesopotamia were believed to be the first people to make and use a wheel. This invention is vital to many conveniences we have today :)<span />
the king holds all power under the constitution. the magna carta took power away from the king
Both were imperialistic.
Both were threatened by nomadic invaders.
Both economies were based on agriculture.
Both were weakened from over expansion.
