radiation I believe that is it
On August 14, after fighting its way through northern China, an international force of approximately 20,000 troops from eight nations (Austria-Hungary, France, Germany, Italy, Japan, Russia, the United Kingdom and the United States) arrived to take Beijing and rescue the foreigners and Chinese Christians.
The central issue was reconstructing the nation after the Civil War.
<span>The eastern neighbors had been converted to Christianity with the reign of the Byzantine Empire. Cyrillic alphabets were introduced and developed in the regions. Scientific knowledge were also transferred to the eastern neighbors during the Middle Ages.</span>