The Nile river was used as a major trade route. Also, they built deep holesin the ground for when the Nile floods every year. this way they had water to last.
It would be primarily "The Church and the Crusades" that <span>played a significant role in uniting the kings and people of Europe, since adhering to religious principles back then was the norm for most. </span>
They did not believe the government had the authority to collect taxes
