The law accelerated westward expansion
Along the Yellow River aka. Huáng Hé
Answer:
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Two major effects of the Crusades were that the kings' authority increased and the Europeans learned about new things from the Muslims they encountered. During the Crusades, the kings increased taxes to fund the cause. Many peasants also left their land to fight, and when they died, the land went to the king. With large amounts of money and land coming in, the kings gained power.
Farming and trading with close countries
