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What are the ways of communication between different regions and civilizations in ancient and modern times?

Chinese

Mainly in China, there were many foreign exchanges in the Han, Tang, Song, Yuan and Ming Dynasties.

War Mongolia invaded West Asia and Europe.

Trade Silk Road Ocean Silk Road China-Mongolia Trade

Show the national prestige of Zheng He's voyage to the West.

Princess Wen Wencheng entered Tibet.

Learn from Sanzang and the West.

Missionary Jian Zhen Du Dong

foreign

Mainly ancient Egypt, Babylon, ancient Greece, Macedonia, ancient Rome, Byzantium and western European countries.

Crusaders who conquered Alexandria

Religious Europeans converted to Christianity and Catholicism.

Cultural exchange The Romans accepted Greek culture.

Overseas trade discovers the new continent and develops Africa.

National reunification, Germany's revival and reunification.

The establishment of multinational empire, the establishment of Austria-Hungary empire.

Immigration development of overseas immigrants in the United States and Oceania