Main causes of WW1:

1. The Assassination of Austrian Archduke Ferdinand and his wife by Bosnian revolutionary, Gavrilo Princip in Sarajevo.

2. Nationalism (main political reason)

3. Imperialism

4. Alliances (German, Italy, Austria)

5. Militarism

Biography of Zheng He

Zheng He was born in Yunnan Province, which was the southwestern part of China in 1371 A.D.  He was also born into a Muslim family that both his father and grandfather were both Muslims and had each visited Mecca for the Muslim pilgrimage. His parents named him “Ma He” in honor of Mohammed. When he was eleven years old, in 1381, a Ming army was dispatched to Yunnan. From that, his father was killed and he also captured by the Ming Muslim troops and made a eunuch. He was castrated that help people to trust him, because he could not have children. He started to serve Zhu Di, who was the prince of Yan and became Ming emperor. In 1402, Zhu Di sent Zheng He and Wang Jinghong to lead a huge fleet to the Western Sea, which is Southeast Asia for today. They carried large quantity of goods to the Southeast Asia, east Africa and Arabia and this was unprecedented great historical period of trade and cultural exchanges. From 1405 to 1433, he led his fleet to voyage to about 30 countries in Africa through West and East Asia for seven times. They carried silk and ceramics and exchanged it with animals, minerals and jewels in tropical area. In the Strait of Malacca, he defeated pirates and reached to Calcutta in India. In 1431, he arrived at Mecca in Saudi Arabia and navigated until the strait of Swahili in eastern part of Africa. However the Hongxi Emperor decided to stop the voyages. So Chinese treasure ship fleets were ended. His voyages are “87 years earlier than that of Columbus, 93 years earlier than that of Gama, and 116 years earlier than that of Magellan.” Zheng he is still remembered navigator, because his museums are in some countries about his legacy such as Sri Lanka and China.