Answer:
The cause of the first Christian Crusade was mainly because of the Muslim Turks invading and taking over the Holy Land. Christians within Europe couldn't enter the Holy Land anymore, so they started to support the Crusades.
The effect of the First Crusade was that the Christians captured Jerusalem and other key cities.
And later the crusades failed to capture Jerusalem, they had several major impacts on Western Europe. They increased the authority of the king: Sometimes nobles died in battle without leaving an heir in which case the king got their land. Kings passed taxes to pay for the
Explanation:
