By airlift. Western allies took to skies and arranged airlifts to bring supplies to the people of Berlin.
Answer: War
Explanation: War was one factor in the decline of Rome.
Image #1 Social Contribution: Sapa Inca are the highest rank and ayllu are the lowest rank
Image #2 Political Contribution: He was the last sapa inca emperor
Image #3 Religious Contribution: A pile of bones and skulls that represents how they worshipped their gods.
Image #4 Intellectual Contribution: A man behind a quipu calculating taxes collected by the Inca empire from the different villages.
Image #5 Technological Contribution: This photo represents the most modern day farming technology in the Inca civilization.
Image #6 Economical Contribution: This is the village of Machu Picchu which was later introduced as one of the seven world wonders. The economical contribution resulted from the monies collected from tourists due to it being designated as one of the seven world wonders, a very important famous landmark.
Kublai Khan defeated the Song Dynasty of southern China in 1279.
Native Americans weren't united and lots of tribes were enemies. So, they would team up with Europeans to help defeat each other.