There are many important contributions of ancient Rome to modern western civilization, but perhaps the best option from this list is "A. <span>network of long-distance paved roads"</span>
The reason and cause of the crusades was a war between Christians and Moslems which centered around the city of Jerusalem and the Holy places of Palestine. The City of Jerusalem held a Holy significance to the Christian religion. 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.
<span>Generate and provide hydroelectric power in the valley
</span><span>Manufacture nitrates and phosphorus for creating fertilizer.
I believe those are the only two.
The project detailed the construction of waterways and electricity for planes and building structures. Farmers were also taught a new way of creating fertilizer</span>
The creation of the North Atlantic Treaty Organization (NATO)prevented the Soviet Union from invading Western Europe. Shortly after World War II, the United States formed an alliance with several Western European countries including Great Britain and France. This alliance was known as NATO and ensured that if any of the nations in this group were attacked, the other nations would help them. So, the Soviet Union did not invade Western Europe because they would be fighting several countries if they did so.