Answer:
Answer is Option C: Since World War II, conflicts have become more complicated and less successful.
Explanation:
According to the containment policy by USA communism would be kept at bay and to do this there was an increase of US military bases throughout the world.
But military conflicts became more complicated than before.They are more political now. Example of such wars is Korean and Vietnam war. Also, as we see in today's world, the war on terror in middle east and Africa is still going on. So, military interventions as part of foreign policy `are proving to be less successful.
This assumption is False.
An effective leader is a person with a passion for a cause that is larger than they are. Someone who has a dream and a vision that aspire to better society. Some features of effective leaders are that they have a clear idea of what they want and they are good in communicating, they build credibility and gain the respect of others setting the right examples, they have clear convictions about what is right and wrong and they are respected for being genuine, principled, ethical and consistent, they are the ones who make the hard decisions and recognize success in their pairs, motivating and inspiring them. These are characteristics of particular personalities, seminars and classes will not be enough, it is necessary to get experience and recognize the mistakes to learn from them.
Tecumseh's death signified the end of united Indian resistance against the Americans in the Northwest Territory.
The answer to your question is: The factor contributed to the fall of the Han Dynasty Roman empire and Abbasid empire is the invasion of the nomandic people and other colonizers especially that the Rome has expanded and too large.