He died on 18th August 1945.
Explanation:
He passed away from a plane crash.
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Song dynasty is the answer
During the Middle Ages farming was the basis of society. Every one of the feudal system - the lord, servants, and retainers - was supported by the income that came from farming. So the exploration of land was extremely important which caused a huge environmental impact.
The problem was that in that time there was no agricultural improvement, they did not know how to enrich the soil or how to do the proper rotation of crops, they used the system that cultivated 2/3 of the land and let the other third to rest. This caused a series of impacts such as climate changes, deforestation, and soil erosion.
Pope Leo III crowned Charlemagne Holy Roman Emperor on Christmas Day, 800, in Rome. ... It also made him the equal in power and stature of the Byzantine emperor in Constantinople. For the Pope, it meant that the Catholic Church had the protection of the most powerful ruler in Europe.
Peace between nations of widely differing political systems and ideologies, especially between communist and non-communist nations: peaceful coexistence between the U.S. and the Soviet Union