Answer: Wealthy civilizations conquered neighboring areas.
Explanation:
Land has always been a valuable resource and in the ancient world was a sign of how much power a nation possessed.
With the wealth accumulated by the wealthier civilizations, they were better able to not only raise armies but to equip them as well.
They would then use these armies to conquer neighbouring areas to increase their influence and area of control and to show how powerful they were.
It has helped let us learn more about each other's cultures and lifestyles
The Reign of Terror instituted the conscripted army, which saved France from invasion by other countries and in that sense preserved the Revolution.
The one that was a factor in the U.S entry in world war I was :
B. the sinking of the Lusitania
hope this helps
