To the best of my knowledge it's A
Fearing Soviet expansion, the United States committed itself to assisting countries whose governments faced overthrow by Communist forces and gave billions of dollars to war-torn Europe to help it rebuild.
Answer:
Faced with severe shortages of oil and other natural resources
Explanation:
Advantages:
Natural barriers
Powerful empire
Protection from enemies
Resources
Disadvantages:
Living in tall mountain range
Elevation sickness
Traveling is dangerous
Another key achievement of the Khmer Empire was its ability to build strong trade links with societies across South-East Asia. Trade in rice and fish became a key part of the Khmer Empire's economy. Use of the Mekong River allowed the Khmer to trade in regions both north and south of the empire.